For what value of a must LMNO be a parallelogram?​

For What Value Of A Must LMNO Be A Parallelogram?

Answers

Answer 1

Answer:

a = 2.5

Step-by-step explanation:

For LMNO to be a parallelogram then opposite sides are congruent, so

ON = LM , that is

8b - 1 = 4b + 7 ( subtract 4b from both sides )

4b - 1 = 7 ( add 1 to both sides )

4b = 8 ( divide both sides by 4 )

b = 2

Then

MN = 2b + 1 = 2(2) + 1 = 4 + 1 = 5 , so

2a = 5 ( divide both sides by 2 )

a = 2.5

Thus

For LMNO to be a parallelogram , a = 2.5

Answer 2

The value of a that makes LMNO a parallelogram is 5/2.

What is a parallelogram?

A parallelogram is a quadrilateral that has two pairs of parallel sides.

In a parallelogram, opposite sides and angles are equal.

The adjacent angles add up to 180 degrees.

We have,

In a parallelogram, the opposite sides are parallel and equal.

This means,

4b + 7 = 8b - 1

7 + 1 = 8b - 4b

8 = 4b

b = 2

Now,

2a = 2b + 1

2a = 2 x 2 + 1

2a = 4 + 1

2a = 5

a = 5/2

Thus,

The value of a is 5/2.

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Related Questions

The value of a car is worth 40,000, and it declines by 3% every year. Which function best represents the the value of the hybrid car.


40000(0. 03)^t


40000(1. 03)^t

Answers

The function best represent the value of hybrid car that is worth 40000 and it declines by 3% every year is  \(40,000(0.97)^{t}\)

The value of the car = 40,000

The value of car declines at the rate of 3% every year

function is represented as F(t)

F(t) = \(P( 1 - \frac{R}{100} )^{t}\)

P is principal amount value of the car which is 40,000

R is rate at which it declines every year which is 3%

t is no. of year

Putting all the values in the equation we get

F(t) = \(40000(1-\frac{3}{100} )^{t}\)

F(t) = \(40000(\frac{97}{100}) ^{t}\)

F(t) = \(40000(0.97)^{t}\)

The function represent the value of the hybrid car is \(40000(0.97)^{t}\) .

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Plot the points in a coordinate plane and sketch ∠ XYZ. Then classify it as right, acute, or obtuse.
X(5,-3), Y(4,-1), Z(6,-2)

Answers

The points X(5,-3), Y(4,-1) and Z(6,-2) can be plotted as given below. From the obtained graph ∠XYZ is the obtuse angle.

The given coordinates are X(5,-3), Y(4,-1) and Z(6,-2).

We need to classify ∠XYZ whether it is right, acute, or obtuse.

How to plot the points in a cartesian plane?

A cartesian plane or coordinate plane can be defined as a plane formed by the intersection of two coordinate axes that are perpendicular to each other. The horizontal axis is called the x-axis and the vertical one is the y-axis. These axes intersect with each other at the origin whose location is given as (0, 0). Any point on the cartesian plane is represented in the form of (x, y). Here, x is the distance of the point from the y-axis and y is the distance from the x-axis.

Now, X(5,-3), Y(4,-1) and Z(6,-2) can be plotted as given below:

The given points X(5,-3), Y(4,-1) and Z(6,-2) have positive x-coordinate and negative y-coordinate.

In the cartesian plane, the fourth quadrant positive x-coordinate and negative y-coordinate.

So, all points X(5,-3), Y(4,-1) and Z(6,-2) lie in the fourth quadrant.

From the graph, we can see that the two lines make an obtuse angle, which is more than 180° and less than 360°.

From the obtained graph ∠XYZ is the obtuse angle.

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Plot the points in a coordinate plane and sketch XYZ. Then classify it as right, acute, or obtuse. X(5,-3),

What inequality represents this graph?

What inequality represents this graph?

Answers

Answer:

x ≥ -8

General Formulas and Concepts:

If it is a closed dot, we use the inequality and equal sign: ≥ or ≤

If it is a open dot, we use the inequality only: > or <

Step-by-step explanation:

We can label the solutions as x.

We see starting from -8 that are solutions get larger.

Since the dot is closed, we use the greater than or equal to sign: ≥

Therefore, x has to be greater than -8 and increasing towards ∞.

x ≥ -8

What is the length Y in this picture ?

What is the length Y in this picture ?

Answers

Answer:

5

Step-by-step explanation:

The triangle pictured is a 45-45-90 triangle, meaning both legs are the same length, 5.

8) A plum grower finds that if she plants 26 trees per acre, each tree will yield 126 bushels of plums. She also estimates that for each additional tree that she plants per acre, the yield of each tree will decrease by 2 bushels. How many trees should she plant per acre to maximize her harvest and what is the maximum harvest?

Answers

The grower should plant 59 trees per acre to maximize her harvest, and the maximum harvest she can achieve is approximately 3540 bushels.

To determine the number of trees the plum grower should plant per acre to maximize her harvest, we can set up an equation and use calculus to find the optimal solution. Let's denote the number of additional trees planted as x.

The yield of each tree can be represented by the equation:

Yield = 126 - 2x

The total yield per acre is then given by:

Total Yield = (26 + x) * (126 - 2x)

To maximize the harvest, we need to find the value of x that maximizes the total yield. We can achieve this by finding the maximum point of the quadratic equation representing the total yield.

Differentiating the equation with respect to x and setting it equal to zero, we can find the critical point:

d(Total Yield)/dx = -4x + 252 - 2(26 + x) = 0

Simplifying the equation, we get:

-4x + 252 - 52 - 2x = 0

-6x + 200 = 0

x = 200/6

x ≈ 33.33

Since we cannot have a fraction of a tree, the grower should plant 33 additional trees per acre to maximize her harvest. This gives a total of 26 + 33 = 59 trees per acre.

To find the maximum harvest, we substitute the value of x into the equation for the total yield:

Total Yield = (26 + 33) * (126 - 2 * 33)

Total Yield ≈ 59 * 60

Total Yield ≈ 3540 bushels

Therefore, the grower should plant 59 trees per acre to maximize her harvest, and the maximum harvest she can achieve is approximately 3540 bushels.

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evaluate the expression 6x + 4 9/10 when x = 2/3.

Answers

x=2/3

6(2/3) + 4 9/10 =4 + 4 9/10 = 8 9/10

Answer:

2x-1=y,2y+3=x

Step-by-step explanation:

no explanation

fastt
13. Calculate the compound interest of an annuity due of BD400 paid each 4 months for 6.2 years if the nominal rate is 3% thirdly? (3 Points)

Answers

Therefore, the compound interest of the annuity due of BD 400 paid each 4 months for 6.2 years at a nominal rate of 3% per annum is BD 40,652.17.

Compound interest of an annuity due can be calculated using the formula:A = R * [(1 + i)ⁿ - 1] / i * (1 + i)

whereA = future value of the annuity dueR = regular paymenti = interest raten = number of payments First, we need to calculate the effective rate of interest per period since the nominal rate is given per annum. The effective rate of interest per period is calculated as

:(1 + i/n)^n - 1 = 3/1003/100 = (1 + i/4)^4 - 1

(1 + i/4)^4 = 1.0075i/4 = (1.0075)^(1/4) - 1i = 0.0303So,

the effective rate of interest per 4 months is 3.03%.Next, we can substitute the given values in the formula:

A = BD 400 * [(1 + 0.0303)^(6.2 * 3) - 1] / 0.0303 * (1 + 0.0303)A = BD 400 * [4.227 - 1] / 0.0303 * 1.0303A = BD 400 * 101.63A = BD 40,652.17

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A reaction with a calculated yield of 9.23 g produced 7.89 g of product. What is thepercent yield for this reaction?​

Answers

The required percentage yield for the reaction when theoretical yield and actual yield are given is calculated to be 85.5 %.  

The maximum mass that can be generated when a particular reaction occurs is referred to as theoretical yield.

Theoretical yield is given as mt = 9.23 g

The actual amount of product recovered is given as ma = 7.89 g

We must comprehend that in order to calculate the reaction's percent yield, we must divide the total amount of product recovered by the utmost amount that can be recovered. If we multiply by 100%, we can represent this fraction as a percentage.

Percentage yield = ma/mt × 100 = 7.89/9.23 × 100 = 85.5 %

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When constructing a perpendicular bisector why must the compass opening be greater than 1/2.

Answers

It is critical to open a compass with over half the way in order for the arcs formed to meet for perpendicular bisector.

What is perpendicular bisector?

A perpendicular bisector would be a line that cuts a line segment in half and forms a 90-degree angle at the intersection point. In other words, a perpendicular bisector separates a line segment now at midpoint, forming a 90-degree angle.

Now, consider an example;

When you wish to build a perpendicular line on a line segment, like line AB, you do the following;

Set the compass on a radius more than half the length of the line AB.Using A as your center, draw an arc above and below line AB.With the same radius and B as our center, draw additional arcs on top or below line AB to join a first arcs on the both side of the line.Join the two arc intersections to cut line AB at M.

A line AB appears to be bisected perpendicularly as a result. The arcs would not have met if the compass is opened less than half way down line AB.

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a critical value, z subscript alphazα, denotes the _______.

Answers

A critical value, z subscript alpha (zα), denotes the boundary or cutoff point for a statistical test where the level of significance, also known as alpha (α), is set.

A critical value, z subscript alpha (zα), denotes the value at which the probability of observing a test statistic in the tail(s) of the sampling distribution equals the pre-determined significance level (alpha).

The critical value can be defined as the value that is compared with the parameter value in the hypothesis test to determine whether the null hypothesis will be rejected. If the value of the parameter is less than the critical value, the null hypothesis is rejected.

However, if the measured value is higher than the critical value, reject the null hypothesis and accept the alternative hypothesis. In other words, cropping divides the image into acceptable and unacceptable areas. If the value of the index falls within the rejection range, the rejection of the fact is rejected, otherwise the negative hypothesis is rejected.

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I need help what is (8-5i)-(-2+3i)

I need help what is (8-5i)-(-2+3i)

Answers

The answer is 10-8i!
Mark me brainiest is correct.

what is x and y of 2x-4y=10&x+5y=40​

Answers

Answer:

\(x = 15, y = 5\)

Step-by-step explanation:

We are given that

\(2x - 4y = 10\\x + 5y = 40\)

When given these types of equations, we can manipulate them in order to cancel out a variable. Cancelling either the x or y works, choose which one is easier.

In this case, we can multiply the second equation by -2 and easily cancel out the x's

\(2x - 4y = 10\\-2x - 10y = -80\)

Now we can add the two equations

\(-4y + (-10y) = 10 + (-80)\\-4y - 10y = -70\\-14y = -70\\y = 5\)

We can substitute y into the second equation and solve for x

\(x + 5(5) = 40\\x + 25 = 40\\ x = 15\)

Check:

2(15) - 4(5)

30 - 20 = 10

it works

If k=, then what is –K?

If k=, then what is K?

Answers

Answer: -k

Step-by-step explanation:

Answer: the third one

Explanation: all the ones that were positive when it was equal to k was negative, and vice versa.

a 12-lb weight is attached both to a vertically suspended spring that it stretches 6 in. and to a dashpot that provides 3 lb of resistance for every foot per second of velocity. if the weight is pulled down 1 ft below its static equilibrium position and then released from rest at time t

Answers

The weight is pulled down 1 ft below its static equilibrium position and then released from rest at time t the phase angle is α=π÷16.

The mass in fps gadgets is m = 0.375 and the spring consistent is \(k = 12/5 × (lb)/(lt) = 24lb / ft .\)

The round frequency is given through \(ω{0} ^ 2 = k/m = 64 , so ω{0} = 8rad / s\) The damping consistent is\(c = 3lb - s / ft so p = i/(2m) = 4\), and the machine is consequently underdamped. Then \(ω= (ω{0} ^ 2 - p ^ 2) = sqrt(48) = 4^(3)\)so the overall answer is

\(x(t) = Ac ^ (- 4t) cos 4 t + B * c ^ (- 4t) * sin 4 ^3t\\v(t) = A * e ^ (- 4t) * (- 4cos 4 ^3 t - 4^3\\sin 4 * ^3 t) + B * e ^ (- 4t) * (- 4sin 4 * 63 t + 4^3 cos 4 ^3* t)\)

We degree the displacement vertically, thinking about a displacement downwards as being positive, because it corresponds to stretching the string further.

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solve the following equation: x2-5=7

Answers

Answer:

x= 6

Step-by-step explanation:

Step 1: Write equation

2x - 5 = 7

Step 2: Solve for x

Add 5 to both sides: 2x = 12

Divide both sides by 2: x= 6

Step 3: Check

Plug in x to verify if it's a solution.

2(6) - 5 = 7

12 - 5 = 7

7 = 7

PLEASE HELP ME! I'LL GIVE BRAINLIEST TO WHOEVER GOT IT CORRECT!
An object is launched at 39.2 meters per second (m/s) from a 42.3-meter tall platform. The equation for the object's heights at time t seconds after launch is \(s(t) = -4.9t + 39.2t + 42.3\), where s is in meters. Create a table of values and graph the function. Approximately when will the object hit the ground?

Answers

Answer:

34.3 meters

Step-by-step explanation:

The generic equation for a movement with constant acceleration is:

S = So + Vo*t + (a*t^2)/2

Where S is the final position, So is the inicial position, Vo is the inicial speed, a is the acceleration and t is the time.

If we compare with our equation (where x is the time and f(x) is the final distance), we have that:

So = 34.3

Vo = 29.4

a = -9.8

So we have that the inicial position (So) of the object is 34.3 meters.

Hope this helps.

how many different ways can president, vice president, treasurer, and secretary be chosen from a class of 40 students?

Answers

There are 91,390,400 different ways to choose president, vice president, treasurer, and secretary from a class of 40 students.

To find the number of different ways to choose president, vice president, treasurer, and secretary from a class of 40 students, we need to use the formula for permutations. This formula is nPr = n! / (n - r)!, where n is the total number of items and r is the number of items being chosen. In this case, n = 40 and r = 4, so we have equations:

40P4 = 40! / (40 - 4)!
40P4 = 40! / 36!
40P4 = (40 x 39 x 38 x 37) / (4 x 3 x 2 x 1)
40P4 = 91,390,400

Therefore, there are 91,390,400 different ways to choose president, vice president, treasurer, and secretary from a class of 40 students. This means that each person in the class has a 1 in 91,390,400 chance of being chosen for all four positions.  

It's important to note that this calculation assumes that each person can only hold one position, and that the order in which the positions are filled matters. If these assumptions are changed, then a different formula would need to be used.


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8. For what value of k, if any, will y=ke?' +4cos(3x)be a solution to the differential equation

y"+9y = 26e 22

(A) 2

(B)

13

5

(C) 26

(D) There is no such value of k.

Answers

Answer:

k = 2

Step-by-step explanation:

As given,

the differential equation is - y'' + 9y = 26\(e^{-2x}\)      .......(1)

Let the solution of the differential equation be y = \(y_{c} + y_{p}\)

The auxiliary equation becomes

m² + 9 = 0

⇒m² = -9

⇒m = ±√-9

⇒m = ± 3i

So, the complimentary solution becomes

\(y_{c}(x)\) = A cos(3x) + B sin(3x)

Now,

Let the particular solution be \(y_{p}\) = A\(e^{-2x}\)

⇒\(y'_{p}\) = -2A\(e^{-2x}\)

and \(y''_{p}\) = 4A\(e^{-2x}\)

Now,

equation (1) becomes

4A\(e^{-2x}\) + 9 ( A\(e^{-2x}\) )= 26\(e^{-2x}\)

⇒4A\(e^{-2x}\) + 9A\(e^{-2x}\)  = 26\(e^{-2x}\)

⇒13A\(e^{-2x}\)  = 26\(e^{-2x}\)

By comparing , we get

13A = 26

⇒A = \(\frac{26}{13}\) = 2

∴ we get

\(y_{p}\) = 2\(e^{-2x}\)

so, the solution becomes

y = A cos(3x) + B sin(3x) + 2\(e^{-2x}\)

As given , the solution y=k\(e^{-2x}\) +4cos(3x)

So , by comparing with the solution , we get k = 2

So, the correct option is (A) 2.

Diagnostic tests of medical conditions have several results. The test result can be positive or negative. A positive test (+) indicates the patient has the condition. A negative test (-) indicates the patient does not have the condition. Remember, a positive test does not prove the patient has the condition. Additional medical work may be required. Consider a random sample of 132 patients, some of whom have a medical condition and some of whom do not. Results of a new diagnostic test for the condition are shown.2
Condition Present Condition Absent Row Total
Test Result + 112 20 132
Test Result - 20 57 77
Column Total 132 77 209
Assume that the sample is representative of the entire population. For a person selected at random, find P(condition absent | getting test result -). Round your answer to the nearest hundredth.

Answers

Given:Diagnostic tests of medical conditions have several results. The test result can be positive or negative. A positive test (+) indicates the patient has the condition.

A negative test (-) indicates the patient does not have the condition. Results of a new diagnostic test for the condition are shown. Condition Present: 112Condition Absent: 20Row Total: 132 Test Result -: 20 Test Result -: 57 Column Total: 132Assuming that the sample is representative of the entire population, we are to find the probability of the condition absent given the test result is -To calculate the probability of the condition absent, we use the Bayes Theorem. According to Bayes' Theorem,

P(A|B) = P(B|A) * P(A) / P(B)

Where, P(A|B) is the probability of the condition absent given the test result -P(B|A) is the probability of getting a test result - given the condition absentP(A) is the probability of the condition absent P(B) is the probability of getting a test result

P(condition absent) = (Number of condition absent)

(Total number of patients) = 20 / 209

P(test result - | condition absent) = 57 / 77

Now,

P(test result -) = (Number of test result -) / (Total number of patients) = 77 / 209

We can now substitute the values into the Bayes Theorem as follows:P(A|B) = P(B|A) * P(A) / P(B)P(condition absent | getting test result -) = (57 / 77) * (20 / 209) / (77 / 209) = (57 * 20) / (77 * 209 / 209) = 1140 / 16093P(condition absent | getting test result -) = 0.07 (rounded to the nearest hundredth)Therefore, the probability of a person having the condition absent given the test result is - is 0.07.

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Does anybody know this? I’m kinda bad with graphing and I could really use an explanation on how to do this.

Does anybody know this? Im kinda bad with graphing and I could really use an explanation on how to do

Answers

The equation for slope-intercept form is y=mx+b, where m is the slope and b is the y-intercept.

You can eliminate answer choices B, C, and D, because the y-intercept doesn't fit. The y-intercept is where the line crosses the y-axis. There's no way it could be 6 or -1/4.

So now it's between A and D. In the image, the line is going down so we know the slope is negative, and slope is rise/run. It goes down about 1 and to the right about 4.

Meaning A is the only option that makes sense.

What is 76 degree F in C?

Answers

76 degrees Fahrenheit was found to be equal to approximately 24.4 degrees Celsius using the formula of conversion.

To convert Fahrenheit to Celsius, you can use the following formula:

Celsius = (Fahrenheit - 32) x 5/9

Plugging in 76 degrees Fahrenheit, we get:

Celsius = (76 - 32) x 5/9

Celsius = 44 x 5/9

Celsius = 220/9

Celsius ≈ 24.4

Therefore, 76 degrees Fahrenheit is approximately 24.4 degrees Celsius.

On the Fahrenheit scale, water freezes at 32 degrees Fahrenheit (°F) and boils at 212 °F, at standard atmospheric pressure.

On the Celsius scale, the freezing point of water is defined as 0 degrees Celsius (°C), and the boiling point of water is defined as 100 °C, at standard atmospheric pressure.

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a triangle has two sides of length 5 and 9. what compound inequality describes the possible lengths for the third side, x?

Answers

The compound inequality describes the possible lengths for the third side, x is -4< c< 14.

What is meant by triangle?

A triangle is a three-sided polygon that is sometimes (but not always) referred to as a trigon. Every triangle has three sides and three angles, with some of them being the same.

A triangle with A, B, and C vertices is symbolized by ΔABC

The Triangle Inequality Theorem states that given two triangle side lengths, the length of the third side must be greater than the difference and less than the sum of the two provided sides. The third side c of a triangle must be the same as the first two sides a and b:

(a - b) < c < (a + b)

As a result, let a = 5 and b = 9

(5-9) <c (5+9)

-4< c< 14

As a result, the third side of the triangle must follow the inequality, which is -4< c <14

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evaluate 2ps for p=3 and s=5
A)30
B)23
C)6
D)10

Answers

Answer: the real answer for this will be p=3/2 and s=5

Step-by-step explanation: here

2p=3

2p/2=3b/2 divide both sides by 2

P=3/2

3/2 for p in s=5

S=5

S=5

Answer P=3/2 and s= 5

Got it

Hey there!

“Evaluate 2ps for p=3 and s=5”

• Side note: If p = 3 then SUBSTITUTE where “p” is at in the equation; if s = 5 then SUBSTITUTE where “s” is at in the equation!

• New equation: 2(3)(5)

2(3)(5)

2(3) = 6

6(5) = 30

Answer: A. 30 ☑️

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

Certify Completion Icon Tries remaining: 3 A high school has 52 players on the football team. The summary of the players' weights is given in the box plot. What is the median weight of the players?

Answers

Certify Completion Icon Tries remaining: 3 A high school has 52 players on the football team. The summary of the players' weights is given in the box plot. The median weight of the players on the football team is 160 pounds.

The box plot shows that the median weight of the players is the middle value of the distribution. In this case, the median weight is halfway between the 26th and 27th players, which is 160 pounds.

The box plot also shows that the minimum weight of the players is 150 pounds and the maximum weight is 212 pounds. The interquartile range, which is the range of the middle 50% of the data, is 20 pounds.

In conclusion, the median weight of the players on the football team is 160 pounds. This means that half of the players on the team weigh more than 160 pounds and half of the players weigh less than 160 pounds.

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8. higher order thinking use the number line to compare skip
counting by 4s four times to skip counting by 8s two times. how are
skip counting by 4s and 8s alike? how are they different? explain.
0 1
2 3
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Answers

They differ in step size, the number of terms, and the starting point. Skip counting by 4s has a smaller step size and more terms compared to skip counting by 8s.

When skip counting by 4s four times, we start at 4 and then add 4 repeatedly: 4, 8, 12, 16.

When skip counting by 8s two times, we start at 8 and then add 8 repeatedly: 8, 16.

Both skip-counting sequences have the number 8 in common, which represents a common multiple of 4 and 8.

However, there are differences between skip counting by 4s and skip counting by 8s.

1. Step size: When skip counting by 4s, the step size is 4. We add 4 to the previous number each time. On the other hand, when skip counting by 8s, the step size is 8. We add 8 to the previous number each time.

2. Number of terms: In skip counting by 4s, we have four terms (4, 8, 12, 16). In skip counting by 8s, we have two terms (8, 16).

3. Starting point: Skip counting by 4s starts at 4, while skip counting by 8s starts at 8.

In summary, skip counting by 4s and 8s are alike in that they both involve adding multiples of a number. They differ in step size, the number of terms, and the starting point. Skip counting by 4s has a smaller step size and more terms compared to skip counting by 8s.

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In the interval (0,6) g is not continuous at x=?

In the interval (0,6) g is not continuous at x=?

Answers

From the given graph, the interval (0,6)g is not continuous at x=2

What is a Graph?

A graph is a visual representation of the change of one variable in relation to one or more other variables, such as a collection of points, lines, line segments, curves, or areas. It can also be defined as  a grouping of all locations whose coordinates meet a certain relation (such as a function).

What is Continuity in a graph?

For instance, a function is continuous if the graph can be drawn with a pen without having to remove it from the paper. If a function's graph is a continuous curve without any flaws, gaps, or breaks, it is said to be continuous. However, phrases like "unbroken curve" and "gaps" aren't strictly speaking mathematical words, and at best they only give the reader a description of continuity rather than a definition.

A function may be continuous at a specific location, continuously over a specified time period, or continuously throughout.

In the given graph, we can observe that the line is not a continuous line. Here, the break in the line is being observed at x=2.

Therefore, the given graph, in the interval (0,6)g is not continuous at x=2.

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D(x) is the price, in dollars per unit, that consumers are willing to pay for x units of an item, and S(x) is the price, in dollars per unit, that producers are willing to accept for x units. Find (a) the equilibrium point, (b) the consumer surplus at the equilibrium point, and (c) the producer surplus at the equilibrium point. D(x)=4000−10x,S(x)=2600+25x (a) What are the coordinates of the equilibrium point? (Type an ordered pair.) (b) What is the consumer surplus at the equilibrium point? $ (Round to the nearest cent as needed.) (c) What is the producer surplus at the equilibrium point? $

Answers

The producer surplus at the equilibrium point is $20000.

To find the equilibrium point, we need to find the value of x where the quantity demanded (D(x)) equals the quantity supplied (S(x)).

Given:
\(D(x) = 4000 - 10xS(x) = 2600 + 25xSetting D(x) equal to S(x) and solving for x:4000 - 10x = 2600 + 25xCombine like terms:4000 - 2600 = 25x + 10x1400 = 35xDivide both sides by 35:x = 1400/35x = 40\\\)
So the equilibrium point is x = 40.

To find the corresponding price, substitute the value of x back into either D(x) or S(x). Let's use D(x):

D(x) = 4000 - 10x

D(40) = 4000 - 10(40)

D(40) = 4000 - 400

D(40) = 3600

Therefore, the equilibrium point is (40, 3600).

To calculate the consumer surplus at the equilibrium point, we need to find the area between the demand curve (D(x)) and the equilibrium price (3600) up to the quantity purchased (40 units).

Consumer Surplus = ∫[0 to 40] (D(x) - 3600) dx

Consumer Surplus = ∫[0 to 40] (4000 - 10x - 3600) dx

Consumer Surplus = ∫[0 to 40] (400 - 10x) dx

Integrating:

Consumer Surplus = [\(400x - 5x^2] evaluated from 0 to 40Consumer Surplus = [400(40) - 5(40)^2] - [400(0) - 5(0)^2]Consumer Surplus = [16000 - 8000] - [0 - 0]Consumer Surplus = 8000 - 0Consumer Surplus = $8000\\\)
Therefore, the consumer surplus at the equilibrium point is $8000.

To calculate the producer surplus at the equilibrium point, we need to find the area between the supply curve (S(x)) and the equilibrium price (3600) up to the quantity supplied (40 units).

Producer Surplus = ∫[0 to 40] (3600 - S(x)) dx

Producer Surplus = ∫[0 to 40] (3600 - (2600 + 25x)) dx

Producer Surplus = ∫[0 to 40] (1000 - 25x) dx

Integrating:

Producer Surplus = \([1000x - (25/2)x^2] evaluated from 0 to 40Producer Surplus = [1000(40) - (25/2)(40)^2] - [1000(0) - (25/2)(0)^2]\\\)
Producer Surplus = [40000 - 20000] - [0 - 0]

Producer Surplus = 20000 - 0

Producer Surplus = $20000

Therefore, the producer surplus at the equilibrium point is $20000.

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A bolt manufacturer is very concerned about the consistency with which his machines produce bolts. The bolts should be 0.2 centimeters in diameter. The variance of the bolts should be 0.025. A random sample of 15 bolts has an average diameter of 0.21 cm with a standard deviation of 0.1587. Can the manufacturer conclude that the bolts vary by more than the required variance at α=0.01 level? Step 1 of 5: State the hypotheses in terms of the standard deviation. Round the standard deviation to four decimal places when necessary. A bolt manufacturer is very concerned about the consistency with which his machines produce bolts. The bolts should be 0.2 centimeters in diameter. The variance of the bolts should be 0.025. A random sample of 15 bolts has an average diameter of 0.21 cm with a standard deviation of 0.1587. Can the manufacturer conclude that the bolts vary by more than the required variance at α=0.01 level? Step 2 of 5: Determine the critical value(s) of the test statistic. If the test is twotailed, separate the values with a comma. Round your answer to three decimal places. A bolt manufacturer is very concerned about the consistency with which his machines produce boits. The bolts should be 0.2 centimeters in diameter. The variance of the boits should be 0.025. A random sample of 15 bolts has an average diameter of 0.21 cm with a standard deviation of 0.1587. Can the manufacturer conclude that the bolts vary by more than the required variance at α=0.01 level?

Answers

To determine if the bolts vary by more than the required variance, we can conduct a hypothesis test. The null hypothesis (H₀) states that the variance of the bolts is equal to or less than the required variance (σ² ≤ 0.025), while the alternative hypothesis (H₁) states that the variance is greater than the required variance (σ² > 0.025).

Next, we need to determine the critical value(s) of the test statistic. Since we are testing for variance, we will use the chi-square distribution. For a one-tailed test with α = 0.01 and 14 degrees of freedom (n-1), the critical value is 27.488.

Now, we can compare the test statistic to the critical value. The test statistic is calculated as (n-1) * s² / σ², where n is the sample size (15), s² is the sample variance (0.1587²), and σ² is the required variance (0.025).

If the test statistic is greater than the critical value, we reject the null hypothesis and conclude that the bolts vary by more than the required variance. Otherwise, we fail to reject the null hypothesis.

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To determine if the bolts vary by more than the required variance, we can conduct a hypothesis test. The null hypothesis (H₀) states that the variance of the bolts is equal to or less than the required variance (σ² ≤ 0.025), while the alternative hypothesis (H₁) states that the variance is greater than the required variance (σ² > 0.025).

Next, we need to determine the critical value(s) of the test statistic. Since we are testing for variance, we will use the chi-square distribution. For a one-tailed test with α = 0.01 and 14 degrees of freedom (n-1), the critical value is 27.488.

Now, we can compare the test statistic to the critical value. The test statistic is calculated as (n-1) * s² / σ², where n is the sample size (15), s² is the sample variance (0.1587²), and σ² is the required variance (0.025).

If the test statistic is greater than the critical value, we reject the null hypothesis and conclude that the bolts vary by more than the required variance. Otherwise, we fail to reject the null hypothesis.

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3. A water balloon was thrown
from a window. The height
of the water balloon over
time can be modeled by the
function y= 16x2 + 160x + 50.
What was the maximum
height of the water balloon
after it was thrown?


Answers

Note: It the given equation the coefficient of \(x^2\) must be -16 instead of 16.

Given:

Consider the height  of the water balloon over  time can be modeled by the  function

\(y=-16x^2+160x+50\)

To find:

The maximum height of the water balloon  after it was thrown.

Solution:

We have,

\(y=-16x^2+160x+50\)

Here, leading coefficient is negative. So, it is a downward parabola and vertex of a downward parabola, is the point of maxima.

If a parabola is \(f(x)=ax^2+bx+c\), then

\(Vertex=\left(-\dfrac{b}{2a},f(-\dfrac{b}{2a})\right)\)

Here, \(a=-16,b=160,c=50\). So,

\(-\dfrac{b}{2a}=-\dfrac{160}{2(-16)}\)

\(-\dfrac{b}{2a}=-\dfrac{160}{-32}\)

\(-\dfrac{b}{2a}=5\)

Now, put x=5 in the given equation.

\(y=-16(5)^2+160(5)+50\)

\(y=-16(25)+800+50\)

\(y=-400+850\)

\(y=450\)

The vertex of the given parabolic equation is (5,450).

Therefore, the maximum height of the balloon is 450 units after 5 units of time.

what is the difference between the mean and median

Answers

Answer:

The mean is an average general view of the data while median is the value which divides a distribution into two equal parts showing where 50% of the data lies.

Answer:

Shown below.

Step-by-step explanation:

The mean and median are both ways to describe the center of a set of numbers.

What is the mean and how do you find it?

The mean is the average of all the numbers in the set. To find the mean, you add up all the numbers and divide by how many there are.

What is the median and how do you find it?

The median is the middle number in a set of numbers when they are arranged in order from smallest to largest. If there are two numbers in the middle, then the answer is simply whatever is between them.

(Ex. if the numbers were 3 and 4, the median will be 3.5.)

So, what's the difference?

The biggest difference between the mean and median is that the mean is affected by outliers, which are values that are much larger or smaller than the other values in a set of data. If there are outliers in a data set, the mean will be affected more than the median.

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