When graphing, the intersections of the graphs represent the solutions of the system.
How to determine the solutions of a system by graphing?
When graphing a system of equations, you just need to graph both equations in the same coordinate axis.
The solutions of the system are all the points where the graphs of the two equations intersect.
This means that if there is only one intersection, there is one solution.
But we can have more than one intersection, like in the case where at least one of the equations is a polynomial of degree 2 or more.
And there is also the case that the graphs never intersect, like in parallel lines, in these cases we have no solutions.
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two angles that add up to 90 degrees are called ________ angles.
two angles that add up to 90 degrees are called complementary angles.
This figure has two intersecting lines and a ray. What is the value of x?
Answer:
37 degrees
Step-by-step explanation:
108 = x + 71
37 = x
How many significant figures does 0. 0560 have?
2
3
4
5
0.0560 has 3 significant figures. The number 0.0560 has three significant figures. Significant figures are the digits in a number that carry meaning in terms of precision and accuracy.
In the case of 0.0560, the non-zero digits "5" and "6" are significant. The zero between them is also significant because it is sandwiched between two significant digits. However, the trailing zero after the "6" is not significant because it merely serves as a placeholder to indicate the precision of the number.
To understand this, consider that if the number were written as 0.056, it would still have the same value but only two significant figures. The addition of the trailing zero in 0.0560 indicates that the number is known to a higher level of precision or accuracy.
Therefore, the number 0.0560 has three significant figures: "5," "6," and the zero between them. This implies that the measurement or value is known to three decimal places or significant digits.
It is important to consider significant figures when performing calculations or reporting measurements to ensure that the level of precision is maintained and communicated accurately.
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Given: ∠CBA ≅ ∠FBA; ∠CAB ≅ ∠FAB
Prove: ΔBCA Is-congruent-to ΔBFA
Triangles C B A and F B A share common side B A. Angles C B A and A B F are congruent. Angles C A B and B A F are congruent.
Complete the missing parts of the paragraph proof.
Proof:
We know that angle CBA is congruent to angle FBA and that angle CAB is congruent to angle FAB because
. We see that
is congruent to
by the reflexive property of congruence. Therefore, we can conclude that triangle BCA is congruent to triangle BFA because
.
Equal sides are the paragraph's omission.
What are congruent angles?Angles that are identical to one another are referred to as congruent angles. As a result, these angles have the same measure as one another. The congruence of angles is unaffected by the type of angle, therefore they can be acute, obtuse, exterior, or interior angles.In the fields of architecture, building, design, and fine art, congruent angles are commonly used.An ordinary pentagon, for instance, has five sides and five angles, each of which is 108 degrees. The angles of a regular polygon will always be congruent, regardless of its size or scale.Common Side BA is the Missing Piece of the Proof.
The reasons given in the evidence are sufficient to demonstrate that BCA and BFA are similar.
ΔBFA≅ ΔBCA, but not sufficiently to demonstrate that BCA is compatible with BFA.
To demonstrate congruent triangles, we must demonstrate that the corresponding sides are likewise equal, so we must demonstrate that BA = BA (common side) before the Proof is complete.
Hence, Equal sides are the paragraph's omission.
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Answer:
in picture
Step-by-step explanation:
An angle measures 1.2° more than the measure of its complementary angle. what is the measure of each angle?
Answer:
44.4°
Step-by-step explanation:
Two complementary angles add up to 90°. Let's call one of the two x, and the second 90-x (in fact, \(x+(90-x) = 90\)).
At this point we can use the second condition: the first angle, plus 1.2°, is equal to the complementary.
\(x+1.2=90-x \rightarrow 2x=88.8 \rightarrow x = 44.4\)
If you sell ice cream cones at the football game you must sell 25 to make a profit. You have already sold 15 cones. Write an inequality that can be solved to show all the numbers of cones, c, that you will still need to sell
Answer:
The inequality to describe the problem is 15 +c >25.
We must sell more than 5 cones to make a profit
Step-by-step explanation:
From this problem, we can see that we need to sell a number of cones (c), that when added to the 15 cones that we have already sold, the result will be greater than 25.
To set up the inequality sign, we need to, first of all, know the inequality sign that we will be using. From the preceding statement, we can see that we need to sell greater than a certain number of cones.
This should tell us that we will be needing the greater-than sign (>).
The next step is to know the format the equation should take:
We have sold 15 cones; We need to sell c more to make it greater than 25.
This will be 15 +c >25.
The inequality to describe the problem is 15 +c >25.
from this, we can see that c > 5 cones.
We must sell more than 5 cones to make a profit
In the coordinate plane, which of the following functions dilates by a factor of 3
about the point (9, 6)?
A. (, ) = (3 + 9, 3 +6)
B. (, ) = (3( + 9), 3( + 6))
C. (, ) = (9+ 3( − 9), 6 + 3( −6))
D. (, ) = (9+ 3(9− ), 6+ 3(6 − ))
a 50ft ladder is placed against a large building. the base of the ladder is resting on an oil spill, and it slips at the rate of 3 ft. per minute. find the rate of change of the height of the top of the ladder above the ground at the instant when the base of the ladder is 30 ft. from the base of the building.
The rate of change of the height of the top of the ladder above the ground at the instant when the base of the ladder is 30 ft. from the base of the building is -3 ft./min.
The rate of change of the height of the top of the ladder above the ground at the instant when the base of the ladder is 30 ft. from the base of the building is -3 ft./min. This rate takes into account the fact that the ladder is slipping at a rate of 3 ft./min. As the base of the ladder is slipping away from the building, the top of the ladder is moving down, hence the negative rate of change. This rate of change will remain the same until the base of the ladder has slipped the full 50 ft. from the base of the building. At this point, the rate of the change of the height of the top of the ladder will be 0, since the ladder will no longer be slipping.
The rate of change can be calculated as follows:
Rate of change = Change in height / Change in time
Change in height = Initial height - Final height
Initial height = 50 ft.
Final height = 50 ft. - 30 ft. = 20 ft.
Change in time = 30 ft. / 3 ft./min. = 10 min.
Rate of change = (50 ft. - 20 ft.) / 10 min. = -3 ft./min.
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Please someone explain
Triangles and angles
X=______ degrees
X 48
96
Exterior Angle property = sum of interior opposite angle is equal to the exterior Angle
x= 48+96
x= 144°
Answer:
144°
Step-by-step explanation:
x is an exterior angle of the triangle.
Angles 96° and 48° are interior angles of the triangle that are not adjacent to angle x. Angles 96° and 48° are called the "remote interior angles" of exterior angle x.
Theorem:
The measure of an exterior angle of a triangle is equal to the sum of the measures of the remote interior angles.
x = 48 + 96
x = 144
Answer: 144°
look at the picture is it b or c ??
Answer:
i would say B pls mark brainlest!
Answer:
I would say it is B too.
data show that the weight of an offensive linesman may be any weight between 200 and 350 pounds. the distribution of weight is based on aa. continuous random variableb. discrete random variablec. qualitative variabled. all the above
The distribution of weight is based on a continuous random variable.
What is Continuous Random Variable?
In statistics, a continuous random variable can take on any value within a certain range, as opposed to a discrete variable, which can only take on a finite number of values.
Qualitative variables are categorical variables that do not have a numerical value, but instead represent characteristics or qualities of a population or sample.
Therefore, the weight of an offensive linesman is an example of a continuous random variable.
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-
Last night, the temperature fell from 0°F to –131
5
in 42
5
hours. What was the average temperature change per hour?
Solve the division problem.
Negative 13 and one-fifth divided by 4 and two-fifths
The temperature drop per hour can be represented by
°F.
Answer: -3
Step-by-step explanation: EDGE 2022
Answer:
yo
Step-by-step explanation:
its -3
EDGENUINITY 2023
Pls help me it’s so hard imo thank you sm
Answer: 7e-5 millimeters, and the nanometer scale is more appropriate
Step-by-step explanation: PLEASE MARK ME BRAINLIEST!!!!!!
-divide the length value by 1e+6
-The millimeter scale and the centimeter scale are two huge, while the nanometer scale is too small. The nanometer scale is often used to measure atoms and viruses.
Answer:
a) The length of the virus in millimetres is 0.000 07 mm.
b) Viruses are microscopic and so nanometres are the more appropriate unit for writing the length of the virus since the nanometre is a smaller unit of measurement than the millimetre.
Step-by-step explanation:
SI is the abbreviation for The International System of Units.
The SI base unit for length is metres (m).
Milli and nano are SI prefixes used to form decimal multiples or submultiples of SI units.
1 millimetre (mm) = 1 × 10⁻³ metres = 0.001 m1 nanometre (nm) = 1 × 10⁻⁹ metres = 0.000 000 001 mTherefore, to convert nanometres to millimetres, multiply the nanometres by 10⁻⁶:
1 nm = 1 × 10⁻⁶ mmSo 70 nanometres is:
70 × 10⁻⁶ mm = 0.000 07 mmViruses are microscopic and so nanometres are the more appropriate unit for writing the length of the virus since the nanometre is a smaller unit of measurement than the millimetre.
Suppose Josephine does not want to begin saving for her retirement immediately. How much money must Josephine invest initially to have $1,000,000 at retirement if she waits 20 years to invest and retires in 50 years from now. Josephine will earn a 12% interest rate compounded semiannually.
Josephine needs to invest an initial amount of approximately $13,427.11 to have $1,000,000 at retirement if she waits 20 years to invest and retires in 50 years from now with a 12% interest rate compounded semiannually.
We can use the formula for compound interest to find the initial investment that Josephine needs to make:
A = P(1 + r/n)^(n*t)
where A is the future value, P is the principal or initial investment, r is the annual interest rate, n is the number of times the interest is compounded per year, and t is the time period in years.
In this case, Josephine wants to have $1,000,000 at retirement, which is the future value. She will wait 20 years to invest and will retire in 50 years from now, which is a total time period of 50 - 20 = 30 years. The interest rate is 12% per year, compounded semiannually, which means n = 2 and r = 0.12/2 = 0.06.
Substituting these values into the formula, we get:
1,000,000 = P(1 + 0.06/2)^(2*30)
Simplifying the expression inside the parentheses, we get:
1 + 0.06/2 = 1.03
Substituting this value and simplifying further, we get:
1,000,000 = P(1.03)^60
Dividing both sides by (1.03)^60, we get:
P = 1,000,000/(1.03)^60
Using a calculator, we get:
P ≈ $13,427.11
Therefore, Josephine needs to invest approximately $13,427.11 initially.
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I need help with 13&14 please ASAP!!!!!
Answer:
3/5 for 13
Step-by-step explanation:
add 2 to the numerator and the denominator
Please Help!!!! I need Help !!!Compare the average rate of change of the two functions below. Which function has the greater average rate of change over the interval [1, 2]?
Function A: g(x)=x2+4x−8
Function B: h(x)=x2−3x+6
Question 5 options:
Function A has the greater average rate of change over the interval [1, 2].
The two function have the same average rate of change over the interval [1, 2].
Function B has the greater average rate of change over the interval [1, 2].
Answer:
greater average rate
Step-by-step explanation:
Answer: function A is correct g(x)=x2+4x−8
Step-by-step explanation: i just got it correct
What is the slope-intercept form of the line represented in the table shown?
X Y
-2 14
-1 12
0 10
1 8
2 6
3 4
Step 1: Find the y-intercept:
Step 2: Choose any two points from the table to find the slope:
Step 3: Use the newly-found slope to write the slope-intercept equation. The form
for that is y = mx + b.
Step 4: Check your work. Choose an ordered pair from the table and substitute
into the newly-found equation
Answer: The slope-intercept form is y = -2x + 10
Step-by-step explanation:
Step 1: The y-intercept is the point where x=0, so that is (0,10)
Step 2: Use the points (-2,14) and (-1,12) to find the slope
Slope (m) = ΔY/ΔX = -2/1 = -2
Step 3: The slope-intercept form is:
y = mx+b
y = (step 2 value) x + (step 1 value)
y = -2x+10
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ezra determined that the graph shown below is vertically compressed by a factor of 1/3 from the graph of y=|x| do you agree or disagree? why?
Answer:
Step-by-step explanation:
no graph was shown
Solve algebraically. Check graphically.
-2 | x-2 | + 3 = x-5
Solution of the expression are,
x = 4 and x = - 4
Given that;
Expression is,
- 2 |x - 2| + 3 = x - 5
Now, We can simplify the expression as;
- 2 |x - 2| + 3 = x - 5
- 2 |x - 2| = x - 5 - 3
- 2 |x - 2| = x - 8
|x - 2| = 4 - x/2
This gives two solutions as;
x - 2 = 4 - x/2
x + x/2 = 6
3x/2 = 6
3x = 12
x = 4
And, x - 2 = - (4 - x/2)
x - 2 = - 4 + x/2
x - x/2 = - 4 + 2
x/2 = - 2
x = - 4
Thus, Solution of the expression are,
x = 4 and x = - 4
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What percent of 155 is 62?
Answer:
40 percent of 155 is 62
40%
Step-by-step explanation:
The equation for "what percent of x is y" can be written as:
\(\frac{y}{x}*100\)
where \(y\) is the part and \(x\) is the whole.
This formula calculates the percentage of y with respect to x. Multiplying the quotient of y/x by 100% converts the fraction to a percentage.
In this example we have "What percent of 155 is 62?"
So
\(y=62\\x=155\)
\(\frac{62}{155}*100\)
\(0.4*100\)
40%
a new medication has been found to relieve pain symptoms in 80% of people who take it. the medication is administered to 50 patients. what is the probability it is effective in 45 of the patients?
The probability that the medication is effective in 45 of the 50 patients is approximately 0.0204, or 2.04%.
To calculate the probability that the medication is effective in 45 of the 50 patients, we can use the binomial distribution formula. The binomial distribution formula calculates the probability of getting a specific number of successes (in this case, effectiveness) in a fixed number of trials (in this case, patients).
The formula is:
P(X=k) = (n choose k) * p^k * (1-p)^(n-k)
where:
P(X=k) is the probability of getting k successes (45 in this case)
n is the number of trials (50 in this case)
k is the number of successes (45 in this case)
p is the probability of success in each trial (0.8 in this case)
Plugging in the numbers:
P(X=45) = (50 choose 45) * 0.8^45 * (1-0.8)^(50-45)
P(X=45) = (50 choose 45) * 0.8^45 * (1-0.8)^5
P(X=45) = 0.0204
So the probability that the medication is effective in 45 of the 50 patients is approximately 0.0204, or 2.04%.
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The selling price of each cup of lemon juice is 3/2 times as much as the selling price of a cup of apple juice. For every 2 cups of lemon juice sold, Mr Tan sells 5 cups of apple juice. He earns $12 more from apple juice than from lemon juice. How much does Mr Tan earn altogether?
Therefore , the solution of the given problem of unitary method comes out to be Mr. Tan makes a total of $30 Plus $18 = $48.
An unitary method is what?To finish the job using the unitary technique, the equation from this nano section should be multiplied by two. In essence, when a wanted object is present, both the characterised by either a group and the pigment sections are omitted from the unit method. A variable fee of Inr ($1.01), for instance, would be paid for 40 pens. It's conceivable that one nation will have complete control over the strategy used to achieve this. Almost all living things have a unique trait.
Here,
Let's name the CDs' pre-tax cost "x" for simplicity. The overall cost of the CDs before tax is two times because Lena purchased two of them for the same price. The cost of the Discs, with the addition of the $1.80 sales tax, is:
=> 2x + $1.80
Given that we know the final price, including tax, was $23.40, we can create the following equation:
=> 2x + $1.80 = $23.40
By deducting $1.80 from each half, we arrive at:
=> 2x = $21.60
When you divide both parts by 2, you get:
=> x = $10.80
As a result, each Disc cost $10.80 before taxes.
We can create another equation now that we know his revenues from selling apple juice are $12 higher than his profits from selling lemon juice:
=> 30n - 18n = 12
=> 12n = 12
=> n = 1
As a result, Mr. Tan sells 2n + 5n = 7n = 7 glasses of juice, for a total profit of 30n = $30 from the sale of apple juice and 18n = $18 from the sale of lemon juice.
Therefore, Mr. Tan makes a total of $30 Plus $18 = $48.
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what is the quotient of the polynomials shown below (12x^3+26x^2+25)÷(2x+5)
The quotient of the polynomials is 6x^2 - 2x + 5 with a remainder of -50.
The quotient of polynomials show (12x^3+26x^2+25)÷(2x+5)
To find the quotient of the polynomials ÷ (2x + 5), you can use polynomial long division as follows:
6x^2 - 2x + 5
-----------------------
2x + 5 | 12x^3 + 26x^2 + 25
- (12x^3 + 30x^2)
---------------
-4x^2 + 25
- (-4x^2 - 10x)
--------------
35x + 25
- (35x + 75)
-------------
-50
Therefore, the quotient of the polynomials is 6x^2 - 2x + 5 with a remainder of -50.
Can anyone help
This is my first time seeing a exponent on the bottom so what does it mean exactly? Will give brainlist if the explanation is clear
The tire company is testing new tires by placing them on a machine that can simulate the tires riding on a road. First,
the machine runs the tires for 8.2 hours at 40 miles per hour. Then the tires are run for 5.8 hours at a different speed.
After this 14-hour period, the machine indicates that the tires have traveled the equivalent of 676 miles. Find the
second speed to which the machine was set.
1. Vicky packs 15 boxes in 6 minutes. How many boxes does she pack in 20 minutes?
We always evaluate just the specific result obtained in the experiment. True or False.
False. We do not always evaluate just the specific result obtained in an experiment.
In scientific experiments, we do not just evaluate the specific result obtained in the experiment. Instead, we evaluate the entire experimental design, including the methods used, the sample size, and the statistical analysis.
For example, suppose a researcher conducts an experiment to test a new drug's effectiveness in treating a particular disease. If the result of the experiment shows that the drug is effective, the researcher cannot simply conclude that the drug works based on this one result. Instead, the researcher must evaluate the experimental design to ensure that the result is reliable and valid.
This evaluation includes examining the study's methods to determine if they are appropriate and if the sample size is large enough to produce meaningful results. It also involves statistical analysis to assess the strength of the relationship between the treatment and the outcome and to determine if the result is statistically significant.
Therefore, evaluating just the specific result obtained in an experiment is not sufficient. We must also consider the experimental design, methods used, sample size, and statistical analysis to draw valid and reliable conclusions from the experiment.
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show that the transformation t: that reflects points through the horizontal -axis and then reflects points through the line is merely a rotation about the origin. what is the angle of rotation?
The transformation t that reflects points through the horizontal axis and then reflects points through the line is a rotation about the origin by an angle of 180 degrees.
First, note that reflecting a point through the horizontal axis is equivalent to multiplying its y-coordinate by -1, while reflecting a point through the line y=x is equivalent to swapping its x and y coordinates. So, if we start with a point (x,y), the two reflections will give us the point (-x,-y), which is just a rotation of the original point by 180 degrees about the origin.
To see why this is true, consider the point (x,y) on the coordinate plane. We can represent this point as a complex number x + yi, where i is the imaginary unit. Multiplying by -1 reflects the point across the real axis, which corresponds to multiplying the complex number by -1, giving us -x - yi.
Swapping the x and y coordinates corresponds to multiplying the complex number by i, giving us y + xi. Therefore, the composition of these two reflections is equivalent to multiplying the complex number x + yi first by -1 and then by i, which corresponds to a rotation by 180 degrees about the origin. Hence, the angle of rotation is 180 degrees.
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P(x, y), Q(0, -2), R (5, 3) and S(3,7) are the vertices of a parallelogram PQRS Find the coordinates of point P.
The coordinates of point P are (8, 12).
To find the coordinates of point P, we can use the fact that opposite sides of a parallelogram are parallel and equal in length.
Additionally, we know that P and Q are opposite vertices of the parallelogram.
Point Q: (0, -2)
Point R: (5, 3)
Point S: (3, 7)
Since opposite sides of a parallelogram are parallel, we can find the length and direction of the vector from Q to R and apply the same vector to point S to find point P.
Find the vector QR:
QR = (5, 3) - (0, -2) = (5, 5)
Apply the vector QR to point S to find point P:
P = S + QR = (3, 7) + (5, 5) = (8, 12)
Therefore, the coordinates of point P are (8, 12).
We can also verify that PQRS is a parallelogram by checking that opposite sides are parallel and equal in length:
Length of PQ = Length of RS = √[(8-0)² + (12-(-2))²] = √(64 + 196) = √260
Length of QR = Length of PS = √[(5-3)² + (3-7)²] = √(4 + 16) = √20
Since opposite sides PQ and RS are parallel and equal in length, and opposite sides QR and PS are parallel and equal in length, PQRS is indeed a parallelogram.
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A store marks up winter wear 17%. Write two expressions equal to the retail price of an
item with an original cost of w dollars.
Answer:
w * (1 + 0.17) or w + (w * 0.17)
Step-by-step explanation:
Here are two expressions that represent the retail price of an item with an original cost of w dollars, assuming that the store marks up the price by 17%:
Retail price = w * (1 + 0.17)
This expression shows that the retail price is equal to the original cost multiplied by the markup percentage (0.17) plus 1. For example, if the original cost of the item is $100, the retail price would be $100 * (1 + 0.17) = $117.
Retail price = w + (w * 0.17)
This expression shows that the retail price is equal to the original cost plus the markup amount (which is equal to the original cost multiplied by the markup percentage). For example, if the original cost of the item is $100, the retail price would be $100 + ($100 * 0.17) = $117.