Answer:
13(b-1)
Step-by-step explanation:
I think it the right one
The coordinates of points A, B and C are
(0, 4), (9, 7) and (8,0) respectively.
The points L, M, N are on the sides BC, CA and AB respectively of the triangle ABC such that AL
is perpendicular to BC and BM is perpendicular
to CA.
The equation of the line AL is 7y + x = 28.
(i)
Find the gradient of the line AC and
hence the gradient of the line BM.
(ii)
Find the equation of the line BM.
iii)
Find the coordinates of the point P
where AL and BM intersect.
Part (i)
We can use the slope formula on the points A(0,4) and C(8,0)
\(m = \frac{y_2-y_1}{x_2-x_1}\\\\ m = \frac{0-4}{8-0}\\\\ m = \frac{-4}{8}\\\\ m = -\frac{1}{2}\)
The slope of line AC is -1/2.
Line BM is perpendicular to AC. This indicates we'll apply the negative reciprocal to -1/2 to end up with 2.
The slope of line BM is 2.
Note that the perpendicular slopes multiply to -1. This is true of any perpendicular pair of slopes as long as neither line is vertical nor horizontal.
Answers:
Slope of line AC = -1/2Slope of line BM = 2=============================================================
Part (ii)
The slope of \(\text{line }\text{B}\text{M} \) was m = 2 from the previous part above.
We'll use the coordinates of point B(9,7) along with this slope value to find the equation of \(\text{line }\text{B}\text{M}\).
\(y - y_1 = m(x - x_1)\\\\ y - 7 = 2(x - 9)\\\\ y - 7 = 2x - 18\\\\ y = 2x - 18+7\\\\ y = 2x - 11\\\\\)
Answer: y = 2x-11=============================================================
Part (iii)
The equations for lines \(\text{A}\text{L}\) and \(\text{B}\text{M}\) are \(7y+x = 28\) and \(y = 2x-11\) in that order. Solving this system of equations will produce the location of point P, where the lines intersect.
Let's apply substitution to solve for x.
\(7y+x = 28\\\\ 7( y ) + x = 28\\\\ 7( 2x-11 ) + x = 28 \ \text{ ... y replaced with 2x-11}\\\\ 14x-77+x = 28\\\\ 15x = 28+77\\\\ 15x = 105 \\\\ x = 105/15\\\\ x = 7\\\\\)
Then use this to find the y coordinate.
\(y = 2x-11\\\\ y = 2(7)-11\\\\ y = 14-11\\\\ y = 3\)
The location of point P is (7,3). This is the orthocenter of the triangle where the altitudes intersect.
Answer: (7,3)I need some help with this monomial....
15a^16b^11/(3a^4b^2)^3
Answer:
\(\frac{5a^4b^5}{9}\)
Step-by-step explanation:
\(\frac{15a^1^6b^1^1}{(3a^4b^2)^3}\)
\(=\frac{15a^1^6b^1^1}{27a^1^2b^6}\)
\(=\frac{15a^4b^5}{27}\)
\(=\frac{5a^4b^5}{9}\)
Answer = \(=\frac{5a^4b^5}{9}\)
fifty tickets numbered 1,2,3, ... ,50 are sold to 50 different people for a drawing. five different prizes are awarded, including the grand prize (trip to fifa world soccer championship with 2 seats for the finals game), and no person can get more than one prize. a) how many ways are there to award prizes?
The number of ways to award the prizes is 5,527,2000
Permutations:
Permutations are the number of different ways of arranging objects in a definite order. The symbol ⁿPₓ is used to denote the number of permutations of n objects, taken x objects at a time.
Here we have,
Fifty tickets numbered 1, 2, 3, ... 50 are sold to 50 different people for drawing
Five prizes are awarded including the grand prize (a trip to the FIFA world soccer championship with two seats )
No person can get more than one prize
As we know Number of permutations of n things taking m at
a time is given by ⁿPₓ = n!/(n-x)!
The number of ways of choosing 4 prizes from 50 different people
=> ⁵⁰P₄ = 50!/(50-4)!
= 50 × 49× 48× 47× 46! /46!
= 50 × 49× 48× 47 = 5,527,2000
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Give a number between the two given numbers.
(17)
8.3 and 8.4
(18)
7.9 and 7.99
Answer:
8.35,7.94
Step-by-step explanation:
If you like my answer than please mark me brainliest thanks
Answer:
to find the number between you just add the numbers and divide by two , hopefully the image above helps !
let me know if you any more explaining :)
What percentage of the measurements in the data set lie to the right of the median? ___ % What percentage of the measurements in the data set lie to the left of the upper quartile? ___ %
To answer this question, we need to know the median and upper quartile of the data set. Once we have these values, we can determine what percentage of the data falls to the right of the median and to the left of the upper quartile.
Let's say the median of the data set is 50 and the upper quartile is 75. To find the percentage of measurements to the right of the median, we need to look at the data values that are greater than 50 and divide that number by the total number of measurements. Let's say there are 40 data values greater than 50 and a total of 100 measurements.
Then, the percentage of measurements to the right of the median would be:
(40/100) x 100% = 40%
To find the percentage of measurements to the left of the upper quartile, we need to look at the data values that are less than or equal to 75 and divide that number by the total number of measurements. Let's say there are 60 data values less than or equal to 75 and a total of 100 measurements. Then, the percentage of measurements to the left of the upper quartile would be:
(60/100) x 100% = 60%
Your answer:
1. 40% of the measurements lie to the right of the median.
2. 60% of the measurements lie to the left of the upper quartile (Q3).
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Kaitha wanted to buy a laptop. she saved 1/3 of the cost of the laptop in the first month. In the second month, she saved $125 less than what she saved in the first month. she saved the remaining $525 in the third month. how much did the laptop cost.
Answer:
It costed $1200
Step-by-step explanation:
First Month Saved 1/3 of total cost
Second Month (1/3 of total cost) - 125
Third Month 525
525-125= 1/3 of total (If she saved the same amount the second month as the first month, then she's already saved 2/3 of the money)
400 = 1/3 of total cost
3X400=1200
Work out the base of a square with area, A = 100cm?
b=
Convert 4582 base ten to base two.
Answer:
Step-by-step explanation:
458210 in binary
=10001111001102
A random sample has 49 values. The sample mean is 8.5 and the sample standard deviation is 1.5. Use a level of significance of 0.01 to conduct a left-tailed test of the claim that the population mean is 9.2. Compute the sample test statistic t.
The claim is false that the population means 9.2. and the required value of the t statistic is -1.02.
Given that,
Sample size (n) = 49,
Sample means (μ) = 8.5,
Standard deviation (σ) = 1.5, and the significance level of 0.01.
To determine whether the population means is equal to 9.2 and also the value of sample test statistic t.
The T - statistic is the ratio of the predictive value of a parameter from its hypothesized value to its standard disputable values.
Let to prove the claim let's assume the population means is not equal to 9.2.
Now
Z = (x - μ)/σ
Z = (8.5 - 9.2) / 1.5
= -0.7 / 1.5
= -0.467
The probability(P) of z of -0.467 is 0.67975.
Since the value of P is more than 0.01 so it implies that the assumption that population means is not equal to 9.2.
\(t = \frac{x - \mu}{\sigma/\sqrt{n} }\\ t = \frac{8.5 - 9.2}{1.5/\sqrt{49} } \\ t = -1.02\)
Thus, the claim is false that the population means 9.2. and the required value of the t statistic is -1.02.
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Find the surface area of the right cone. round your answer to the nearest hundredth. a right cone is drawn. the length of radius of the base is 8 inches and the slant height is 16 inches.
The surface area of the right cone is 602.88 inch².
What is cone ?The surface traced by a moving straight line (the generatrix) that always passes through a fixed point (the vertex). The path, to be definite, is directed by some closed plane curve (the directrix), along which the line always glides.Given,
length of radius of the base is = 8 inches
the slant height is =16 inches.
Now using formula ,
the surface area of right circular cone is a right circular cone = πr(r + l)
So, r = 8 inches l = 16 inches
put values in the formula ,
surface area of right circular cone = 3.14 × 8 ( 8 + 16 )
= 3.14 × 8 × 24
= 602.88 inch²
Therefore, the surface area of the right cone is 602.88 inch².
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Solve the equation 2x + 10 = 30.
Answer:
X=10
Step-by-step explanation:
1. Subtract 10 from both sides
2. Simplify
3. Divide both sides by the same factor
4. Simplify
In ΔNOP, o = 3.5 inches, n = 3.3 inches and ∠N=37°. Find all possible values of ∠O, to the nearest 10th of a degree.
Answer:
Answer: 39.7
∘
and 140.3
∘
Step-by-step explanation:
All possible values of ∠O, to the nearest 10th of a 39.7degrees and 140.3 degrees.
We have given that,
In ΔNOP, o = 3.5 inches, n = 3.3 inches and ∠N=37°.
What is the triangle?
A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted \triangle ABC.
We have to determine all possible values of ∠O, to the nearest 10th of a degree.
All possible values of ∠O, to the nearest 10th of a 39.7degrees and 140.3 degrees.
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which equation represents a tangent function with a domain of all real numbers such that where n is an integer?
The tangent function is defined as the ratio of the sine function to the cosine function. It is periodic with a period of pi and has vertical asymptotes at odd multiples of pi/2. An equation for a tangent function with a domain of all real numbers and n as an integer is given by the following equation:
y = tan(x + n(pi))
The tangent function is defined as the ratio of the sine function to the cosine function, and it is periodic with a period of pi. It has vertical asymptotes at odd multiples of pi/2.
The tangent function can be represented by the following equation:
y = tan(x)
Where x is the angle measured in radians.
If we want to shift the graph of the tangent function by a certain amount, n, in the horizontal direction, we can use the following equation:
y = tan(x + n(pi))
Where n is an integer.
For example, if n = 2, then the graph of the tangent function would be shifted 2pi units to the left, and the equation would be:
y = tan(x - 2pi)
If n = 3, then the graph of the tangent function would be shifted 3pi units to the left, and the equation would be:
y = tan(x - 3pi)
And so on for any integer value of n.
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point p partitions directed segment AB in the part to part ratio of 4:4. If A(5,-7) and B(1,-1), find the y-coordinate of P. Round your answer to 2 decimals
Using the fact that P is the midpoint of the segment AB, we will see that its y-value is -4.
How to find the y-coordinate of P?We know that point P partitions directed segment AB in the part to part ratio of 4:4.
Notice that the ratio is equivalent to 1:1
So point P is just the midpoint of the segment, remember that for a segment whose endpoints are (a, b) and (c, d), the midpoint is:
M= ( [a+ c]/2, [b + d]/2)
P is the midpoint of (5,-7) and (1,-1), then the value of the y-coordinate of P is:
y = (-7 + (-1))/2
y = (-7 - 1)/2
y = -4
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James knows that when he walks, he takes about 120
120
steps per minute and that each step is 2.75
2.75
feet long. Which calculation is most reasonable for James to use to find out his walking speed in miles per hour?
Answer:
speed of James is: 3.75 miles/hour.
Step-by-step explanation:
We need to find the speed of James in miles per hour(mi/hr)
we know that 1 mile=5280 feet
James takes 120 steps in 1 minute so he will cover 120×60 steps in 1 hour.
i.e. he takes 7200 steps in 1 hour.
also each step of James=2.75 feet
total distance covered by James in 1 hour=2.75×7200 feet=19800 feet
\(19800feet=\frac{19800}{5280} miles=3.65miles\)
hence speed of James= (distance covered by james in 1 hour)/1 hour
speed of James=3.75 miles/hour.
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Answer:
We need to find the speed of James in miles per hour(mi/hr)
we know that 1 mile=5280 feet
James takes 120 steps in 1 minute so he will cover 120×60 steps in 1 hour.
i.e. he takes 7200 steps in 1 hour.
also each step of James=2.75 feet
total distance covered by James in 1 hour=2.75×7200 feet=19800 feet
19800feet=\frac{19800}{5280} miles=3.65miles19800feet=
5280
19800
miles=3.65miles
hence speed of James= (distance covered by james in 1 hour)/1 hour
if p(a) = 0.38, p(b) = 0.83, and p(a ∩ b) = 0.57; then p(a ∪ b) =
The value of the union of sets A and B is, P(A ∪ B) is 0.64.
The union of two sets means the total elements in both the sets combined.
Given: sets P(A) = 0.38, P(B) = 0.83, and intersection P(A ∩ B) = 0.57
We need to find the union of P(A ∪ B).
P(A ∪ B) = P(A) + P(B) - P(A ∩ B)
Let us substitute the given values in the formula.
P(A ∪ B) = P(A) + P(B) - P(A ∩ B)
=0.38+0.83-0.57
=1.21-0.57
=0.64
Therefore, the value of union of sets P(A ∪ B) is 0.64.
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Special right triangle
Problem 1
Answers:a = 6
b = \(6\sqrt{3}\)
---------------------
Reason:
The short leg is opposite the smallest angle. For any 30-60-90 triangle, the short leg is half the hypotenuse. This means the short leg is 12/2 = 6 units long. That's why a = 6.
The long leg is \(\sqrt{3}\) times longer compared to the short leg.
\(\text{long leg} = (\text{short leg})*\sqrt{3}\\\\\text{long leg} = 6\sqrt{3}\)
This template applies to 30-60-90 triangles only.
============================================================
Problem 2
Answer:
a = 7
---------------------
Reason:
We use the same idea mentioned in problem 1. The short leg is half as long as the hypotenuse. It works for 30-60-90 triangles only.
HELLLP WILL GIVE 50 POINTSS
Answer:
12
Step-by-step explanation:
You need to use the pythagorean theorem. a^2 +b^2=c^2. Label the sides with a, b, and c. The longest side is c, but it does not matter for the other two sides.
Answer:
y = 12
Step-by-step explanation:
\(c^{2}\) = \(a^{2}\) - \(b^{2}\)
\(c^{2}\) = \(35^{2}\) - \(37^{2}\)
\(35^{2}\) = 1,225
\(37^{2}\) = 1,369
1,369 - 1,225 = 144
\(\sqrt{144}\) = \(c^{2}\)
\(\sqrt{144}\) = 12
The diagonals of a _____ are congruent and perpendicular bisectors of each other
The diagonals of a Rhombus are congruent and perpendicular bisectors of each other
If a parallelogram contains a pair of consecutive sides that are called congruent, then it is considered a rhombus, or if a parallelogram bisects two angles of the same, then it is a rhombus.
If the diagonals of a quadrilateral are perpendicular bisectors to each other, then the quadrilateral is a rhombus.
There are general properties of a Rhombus are:
Opposite angles are congruent or equal.The opposite sides are equal and parallel.Diagonals bisect each other and the sum of any two adjacent or consecutive angles is 180°.To know more about Rhombus:
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If the aquarium manager has 300 grams of shrimp
food for this tank of 10 shrimp, how many days will it
last? Explain or show your reasoning.
Answer:
30 daysStep-by-step explanation:
300 grams of shrimp food
10 shrimp
get 300 and divide by 10
300/10=30
Last year, Bob's Market ordered 15 1 2 15 2 1 pounds of plums from a local orchard. This year, the market plans to order 1 1 4 1 4 1 times as many pounds of plums as were ordered last year. They want 2 5 5 2 of this order to be red plums. What is the total amount, in pounds, of red plums the market plans to order this year?
Answer: 7 3/4 pounds
Step-by-step explanation:
Here's the correct question:
Last year, Bob's Market ordered 15 1/2 pounds of plums from a local orchard. This year, the market plans to order 1 1/4 times as many pounds of plums as were ordered last year. They want 2/5 of this order to be red plums. What is the total amount, in pounds, of red plums the market plans to order this year?
The amount of pounds of plum that is ordered this year will be:
= 15 1/2 × 1 1/4
= 31/2 × 5/4
= 19 3/8
Since they want 2/5 to be red plums, the total amount of red plums will then be:
= 2/5 × 19 3/8
= 2/5 × 155/8
= 310/40
= 7 3/4 pounds
please help me answer
Answer:
x=20
Step-by-step explanation:
Madison has three jobs. This week she earned $124 waitressing, $30 delivering packages, and $46 babysitting. What percent of her money earned this week came from babysitting
Answer:
23%
Step-by-step explanation:
Answer:
23 %
Step-by-step explanation:
The total money earned:
124+ 30+ 46 =200
Percent earned babysitting
money earned babysitting / total * 100%
46/200 * 100 = 23 %
-
Question 4
1 pts
"How many times per week do you brush your teeth?"
The summary statistics for a random sample of 40 were as follows: the sample mean was 13,275 and
the sample standard deviation was 5,883,
Does this data suggest that the true mean number of teeth brushings for SoCal college students
differs from 14 per week?
Test at the 10% level of significance,
Answer:
twice a day
Step-by-step explanation:
morning and bed time
Solve inverse Laplace of the following equations 0.250 $? +0.707s +0.250
The given problem involves finding the inverse Laplace transform of a given function. Specifically, we are asked to find the time-domain function that corresponds to the Laplace transform of the function 0.250 s + 0.707 s + 0.250.To find the inverse Laplace transform, we need to use the properties of the Laplace transform and the inverse Laplace transform.
We can use tables of Laplace transforms to find the inverse Laplace transform of each term in the given function, and then combine these terms to obtain the overall inverse Laplace transform.The inverse Laplace transform involves finding the time-domain function that corresponds to a given Laplace transform. It is the inverse operation of the Laplace transform, which converts a time-domain function into its Laplace transform. The Laplace transform is a useful tool in engineering, physics, and mathematics, as it allows us to analyze linear systems and differential equations in the frequency domain.
Overall, the problem involves applying the principles of Laplace transforms and inverse Laplace transforms to find the time-domain function that corresponds to a given Laplace transform. It also requires an understanding of tables of Laplace transforms and the properties of the Laplace transform and the inverse Laplace transform.
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can someone answer this question really quick
Simplify the expression by combining like terms.
43a−12b+13a+52b
Enter your answer as an expression, like this: 42x+53
Answer:
56a+40b
Step-by-step explanation:
43a plus 13a is 56a, -12b + 52b is 40b, together it's 56a+40b
Because of a shortage of workers, a radiologic technologist is working
overtime. She gets overtime pay for any hours over 8 hours per day. How
many hours of overtime did she work in 1 week?
Answer:
8
Step-by-step explanation:
on a given planet, the weight of an object varies directly with the mass of the object. suppose the am object whole mass is 5 kg weighs 15 N. Find the weight of an object while mass is 2 kg
The weight of an object with a mass of 2 kg would be 6 N on this planet, assuming the direct variation relationship holds.According to the given information, the weight of an object varies directly with its mass.
This implies that there is a constant of proportionality between weight and mass. Let's denote this constant as k.
From the given data, we have:
Mass = 5 kg
Weight = 15 N
Using the direct variation equation, we can write:
Weight = k * Mass
Substituting the given values, we have:
15 N = k * 5 kg
To find the value of k, we divide both sides of the equation by 5 kg:
k = 15 N / 5 kg = 3 N/kg
Now that we know the constant of proportionality, we can find the weight of an object with a mass of 2 kg:
Weight = k * Mass = 3 N/kg * 2 kg = 6 N.
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(12 pts) consider the following rational function where all factors given are irreducible: 2x (x 1)(x 2 3) (a) rewrite the expression using partial fraction decomposition. do not solve for the coefficients. do not solve for the coefficients. 2x (x 1)(x 2 3)
The given rational function is 2x / ((x)(x-1)(x-2)(x-3)). By using partial fraction decomposition, we can rewrite the expression as a sum of simpler fractions, with each denominator being a factor of the original expression.
To perform partial fraction decomposition, we start by factoring the denominator of the rational function. In this case, the denominator is (x)(x-1)(x-2)(x-3). We can rewrite the original expression as a sum of fractions with simpler denominators.
Let's denote the unknown coefficients as A, B, C, and D. Then the partial fraction decomposition of the given rational function is:
2x / ((x)(x-1)(x-2)(x-3)) = A/x + B/(x-1) + C/(x-2) + D/(x-3).
Each term on the right side has a simpler denominator that matches one of the factors of the original denominator. The coefficients A, B, C, and D are constants that we need to determine by equating the numerators on both sides of the equation and solving the resulting system of equations.
Note that the given prompt specifically asks not to solve for the coefficients, so we stop here with the partial fraction decomposition.
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An equation machine. X + 5 = 7. x is labeled A, + is labeled B, 5 is labeled C, = is labeled D.
Use the letters given below the equation to identify the different parts of the equation.
The variable in the equation is represented by
The constant in the equation is represented by
The operation in the equation is represented by
Answer:
variable =A (x)
Constant= C (5)
operation=B (+)
Answer:
A C B
Step-by-step explanation: