For questions 3-4, use the following information.
Ten students were surveyed about whether they wanted to take guitar lessons. The table below shows the results of the survey.
Number of Students Guitar Lessons No Guitar Lessons
Number of Boys 76 12
Number of Girls 42 37
3. Find the percentage of boys who wanted guitar lessons. ________________________
4. Find the total percentage of students who wanted lessons. ______________________

The exponential function that best models this data is given as follows:

C. y = 80(0.75)^x + 20.

An exponential function, considering it's asymptote, is defined as follows:

y = a(b)^x + c.

In which the parameters are given as follows:

From the graph, the horizontal asymptote is at y = 20, hence the parameter c is defined as follows:

c = 20.

When x = 0, y = 100, hence the parameter a is obtained as follows:

100 = a(b)^0 + 20

a + 20 = 100

a = 80.

When x = 5, y = 40, hence the parameter b is obtained as follows:

40 = 80b^5 + 20

80b^5 = 20

b^5 = 1/4

b = (1/4)^(1/5)

b = 0.75. (approximately).

Hence the function is defined as follows:

y = 80(0.75)^x + 20.

Meaning that the correct option is given by option C.

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A) Amaire have more money than Jermaine after 10 years.

B) By [tex]5.387*10^{11}[/tex]% Amaire has more money than Jermaine.

What is compound interest?

The interest charged on a loan or deposit is known as compound interest. It is the idea that we employ the most frequently on a daily basis. Compound interest is calculated for an amount based on both the principal and cumulative interest.

Amare and Jermaine has initial amount = $1000

Amare spend his money that pays 2.25% compounded daily.

where are Jermain invest his money that pays 2.25% compounded annually.

Formula of Compound interest that compounded daily

final amount = [tex]A(1+\frac{r}{365})^{365t}[/tex]

where A is initial amount and t is time in years .

final amount after 10 years

final amount = [tex]1000(1+\frac{2.25}{365})^{365*10}[/tex]

final amount = 1000×[tex]1.00616^{3650}[/tex]

final amount = 1000×5.51×[tex]10^{9}[/tex]

final amount  = $5.51 ×[tex]10^{12}[/tex]

Formula of Compound interest that compounded annually

final amount = [tex]A(1+\frac{r}{100})^{t}[/tex]

where A is initial amount and t is time in years .

final amount after 10 years

final amount = [tex]1000(1+\frac{2.25}{1000})^{10}[/tex]

final amount = 1000×[tex]1.00225^{10}[/tex]

final amount = 1000×1.0227

final amount  = $1022.7

Part A :

Amare has more money after 10 years.

part B :

percent more money = [($5.51 ×[tex]10^{12}[/tex] - 1022.7)/1022.7]*100=[tex]5.387*10^{11}[/tex]%

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Answer:

602

Step-by-step explanation:

First find area of the rectangle portion

L x W

22 x 15

330

Second find area of trapezoid

B1+B2/2 times height

12+22/2 times 16

34/2 times 16

17 times 16

272

Lastly, add areas together

Answer:

[tex]G(T(x)) = 27(x + 6.9)[/tex]

Step-by-step explanation:

Given

[tex]T(x) = 9(x + 6.9)[/tex]

[tex]G(x) = 3x[/tex]

Required [Missing from the question]

G(T(x))

We have:

[tex]G(x) = 3x[/tex]

This implies that:

[tex]G(T(x)) = 3(T(x))[/tex]

Substitute: [tex]T(x) = 9(x + 6.9)[/tex]

[tex]G(T(x)) = 3[9(x + 6.9)][/tex]

Open bracket

[tex]G(T(x)) = 27(x + 6.9)[/tex]

Answer:

90

Step-by-step explanation:

2*3*3*5=

90

Answer:

90

Step-by-step explanation:

2 × 3 × 3 × 5

2 × 3 × 15

2 × 45

90

Thus, the choice that best describes the graph is A cubic function on a coordinate plane has an inflection point at x = 5 and crosses the x-axis at x = 5.

f(x)=ax3+bx2+cx+d, where  0 and the coefficients a, b, c, and d are complex numbers, and where the variable x has real values. In other words, it is both a three-degree polynomial function and a real function.

Here,

Our role in this situation is:

y = ∛(x - 5) (x - 5)

so the cubic root is given.

In this case, we see that when x = 0, we have:

The y-intercept is y = -5.

And if x = 5, we get:

Because of the sign change, the x-intercept and inflection point are both equal to  y = ∛0 = 0 

Thus, the choice that best describes the graph is A cubic function on a coordinate plane has an inflection point at x = 5 and crosses the x-axis at x = 5.

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The XYZ axis is called as X-axis, Y-axis, and Z-axis, respectively.

The term axis in math is defined as  a line with respect to which a curve or figure is drawn, measured, rotated, etc.

Here we have given that XYZ axis, in math are no standard names for the coordinates in the three axes

Based on these the coordinates are often denoted by the letters X, Y, and Z, or x, y, and z.

And these axes may then be referred to as the X-axis, Y-axis, and Z-axis, respectively.

Here in the graph x-axis and y-axis represent the first two dimensions where as the z-axis, the third dimension. Which is also defines the x and y denote width and height and the z denotes depth.

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Answer:

8

Step-by-step explanation:

90x5=450

548-450=98

98divede12=8..2

Answer: is 14

Step-by-step explanation: its 14 but i dont know how to explain it

The perimeter of the right triangle is 228 inches

What is a right-angle triangle?

It is a triangle in which one of the angles is 90 degrees and the other two are sharp angles. The sides of a right-angled triangle are known as the hypotenuse, perpendicular, and base.

The complete length of a shape's edge serves as its perimeter in geometric terms. Adding the lengths of all the sides and edges that surround a form yields its perimeter.

Since it is a right triangle,

c² = 57² +76²

c² = 3249 + 5776

c² =  9025

c=  √ 9025 = 95

Perimeter is the sum of all sides

Perimeter = 57+76+95 = 228 inches

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For a roll of paper with dimensions 3 feet cut to any desire length,

a) The value of perimeter when cut to 2.5 feet is 11 feet.

b) The complete table with filled perimeter column is present above . The function notation for perimeter is , P =2(L+ W)

c) P(11) , represents the length of paper cut to 11 feet in this situation. It's value i.e., P(11) = 28 feet .

Perimeter is defined as the sum of all boundary length of any geometry. We have a roll of paper with dimensions 3 feet ( i.e, width) is cut to any length. From, it we conclude that that paper is like quadrilateral shape but not square.

a) when the paper cut in a length of 2.5 feet , so, length (L) = 2.5 feet

The perimeter of quadilateral ( rectangle in this case ) is 2(L+W) so, perimeter

= 2( 2.5 + 3)

= 11.0 feet

b) Now, we have to complete "perimeter coulmn ," in the table and side lengths are provided.

Width (w) = 3 feet

length (l) = 1 feet

perimeter = 2(4) = 8

similarly, side lengths (ft.) perimeter ( ft.)

2.5 11

1 8

2 10

11 28

L 2( L + W)

The functional notation for perimeter is

P = 2(L+W) .

c) P(11) represents the length of paper in feet when the paper is cut at a length of 11 feet . It's value is 28 feet . So, the value of P(11) is 28 feet.

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Complete question:

A roll of paper that is 3 feet wide can be cut to any length.

a. If we cut a length of 2.5 feet, what is the perimeter of the paper?

b. Complete the table with the perimeter for each given side length. Then, write a rule for a function, P, that gives the perimeter of the paper in feet when the side length in feet is L, use a function notation.

c) what does P(11) represent in this situation? What is its value?

Answer:

5

Step-by-step explanation:

Each value of ADCB is 2x as much as EHGF

Answer:

Step-by-step explanation:

Total amount of money earned is x.

Answer:

Solution given

tax = 4.5%

Amount of tax = $46

Let total amount of money earned is x.

we have

4.5% of x = $46

x×4.5/100 = 46

x×0.045 =46

x = 46/0.045

x= 1022.22

So Racheal earn $ 1022.22.

Answer:

Take the ratio of the 2 numbers:

[tex] \frac{6.5 \times {10}^{ - 8} }{8.8 \times {10}^{ - 27} } = 7.4 \times {10}^{18} [/tex]

This means that it takes 7.4×10^18 particle Bs to equal the mass of particle A.

Answer:

11.75

Step-by-step explanation:

The quilt consists of a square array of 8 x 8 = <<8*8=64>>64 square pieces of fabric.

Since the length of the total quilt is 7.52 feet, the side length of each square piece of fabric is 7.52 / 8 = <<752/8=0.94>>0.94 feet.

However, since you are asked to enter your answer in the box in feet, you should express 0.94 feet as a decimal to the nearest hundredth. The nearest hundredth of a foot to 0.94 feet is 0.95 feet. Therefore, the side length of each square piece of fabric is approximately 0.95 feet, or approximately 11.75 inches.

So the answer is 11.75 feet.

Answer:

negitive corralation

Step-by-step explanation:

The outside temperature and the number of layers you wear.​ represents a negative correlation.

It is defined as the relation between two variables which is a quantitative type and gives an idea about the direction of these two variables.

As we know a negative correlation is a relationship between two variables in which one increases while the other decreases and a positive correlation is a relationship in which one variable increases while the other decreases.

The case of the two variables that are outside temperature and the number of layers you wear represents the negative correlation because in the summer temperature increases and the number of layers decreases that you wear.

In the winter when the temperature goes down the number of layers increases that you wear.

Thus, the outside temperature and the number of layers you wear.​ represents a negative correlation.

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Answer:

x = - √2/2

Step-by-step explanation:

We know that x = rcosθ and y = rsinθ. The unit circle always have radius of 1 unit. Therefore, r = 1 as defined. Hence:

x = cosθ, y = sinθ

x = cosθ, θ = arcsin(y)

x = cos{arcsin(-√2/2)}

Find the measurement or θ that makes sinθ = -√2/2 and that is π + π/4 = 5π/4.

x = cos(5π/4)

And cos(5π/4) = - √2/2 as well. Hence, x = - √2/2.

Answer:

To find the sale price of the suit, we need to first calculate the discount. The discount is equal to the original price multiplied by the discount rate, which in this case is $280 * 30% = $84.

Then we subtract the discount from the original price to find the sale price: $280 - $84 = $196.

So the sale price of the suit is $196.

Step-by-step explanation:

Answer:

d. y=8x

Step-by-step explanation:

since y = the number of legs and spiders = x

each spider has 8 legs

so y = 8*x

which is y=8x

Answer:

Function 2, y = x - 5

Step-by-step explanation:

Function 1 is called an Absolute Value Function (where there is absolute value symbol around the whole or a part of the equation, its parent function is; y = |x| )

Function 2 is called a Linear Function (which could be written as y = mx + b, here m and b are integer values, b value is the y-intercept, m is the slope)

Function 3 is called an Inverse Function ( where a value is divided by a variable like "x", it's parent function is; y = [tex]\frac{1}{x}[/tex] )

Function 4 is called a Quadratic Function (it's a function where the variable is squared, it's parent function is; y = x² )

Hope this helps!

The function that represents the linear function is y = x - 5. Then the correct option is B.

A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.

The linear equation is given as,

y = mx + c

Where m is the slope of the line and c is the y-intercept of the line.

Let's check all the options, then we have

A) y = |x| - 5, the function is an absolute function.

B) y = x - 5, the function is a linear function.

C) y = 1/x - 5, the function is a rectangular hyperbolic function.

D) y = x² - 5, the function is a quadratic function.

The function that represents the linear function is y = x - 5. Then the correct option is B.

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The value of c will be 0.

The slope of a line is defined as the change in y coordinate with respect to the change in x coordinate of that line. The net change in y coordinate is Δy, while the net change in the x coordinate is Δx.

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

m = y2 - y1 / x2 - x1

where m = 0

y2 = c

y1 = 0

x1 = -2

x2 = -8

0 = c - 0 / -8 - -(2)

0 = c - 0 / -8 + 2

0 = c - 0 / -6

c - 0 = -6(0)

c - 0 = 0

c = 0

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The value of x and y in the diagram are 26° and 9° respectively.

Two adjacent angles formed a linear pair.

The linear pair property:

The sum of the angle measure of both the angles is 180°.

Given:

Using linear pair theorem,

(5x - 17)° + (3x - 11)° = 180°.

8x - 28°= 180°

8x = 180° + 28°

8x = 208°

x = 208/8

x = 26°

The value of x is 26°.

Now,

3x - 11° = 3×26°-11°

           = 67°

Linear pair theorem,

67° + 90° + (2y+5)° = 180°

157°+2y+5° = 180°

2y + 162° = 180°

2y = 180° - 162°

2y = 18°

y = 9°

The value of y is 9°.

Therefore, the value of x is 26° and y is 9°.

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The complete question is given in the attached image.

A unit rate I found at the grocery store was 10 bananas/ $5 this describe the price for 10 bananas but can also be used to identify the price for 1 banana.

In mathematics, a unit rate can be defined as a mathematical expression that includes two units to show the rate of a specific activity. For example, the expression 50 kilometers/2 hours shows a car covers a distance of 50 kilometers in two hours, which can be simplied as 25 kilometers per hour.

A unit rate I could observe last weekend while buying fruits and vegetables was 10 bananas/ $5. This unit rate is mainly used to inform buyers about the price of 10 bananas. However, this can also be simplified as $0.5 per banana and this would inform the buyers about the price per unit.

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Answer:

[tex] {x}^{y} = {y}^{x} \: - - - (1)[/tex]

[tex]x = 2y \: - - - (2)[/tex]

Substitute (2) into (1):

[tex] {2y}^{y} = {y}^{2y} [/tex]

Log both sides:

[tex]lg(2 {y}^{y} ) = lg(y^{2y} )[/tex]

[tex]y \: lg(2y) = 2y(lg \: y)[/tex]

[tex]y \: lg(2) + y \: lg(y) = 2y \: lg(y)[/tex]

[tex]y \: lg(2) = 2y \: lg(y) - y \: lg(y)[/tex]

[tex]y \: lg(2) = y \: lg(y)[/tex]

Divide by y on both sides:

[tex]lg(2) = lg(y)[/tex]

[tex] {10}^{lg(2)} = {10}^{lg(y)} [/tex]

2= y

y= 2 (proved)

Explanation:

• step 5: lg(m)^n= nlg(m)

• Step 6: lg(mn)= lg(m) +lg(n)

Answer:

72.83

Step-by-step explanation:

61²+x²=95²

3721+x²=9025

x²= 5304

x= 72.83

The sum of the two polynomials 6s²t – 2st² and  4s²t – 3st² is 5(2s²t – st²) in factorized from.

One or more algebraic terms (monomials) are combined mathematically to form a polynomial. Poly- (many) and -nomial (terms) are the roots of the word "polynomial".

A polynomial can have exponents (powers), constants (numbers), and variables (letters), but never negative exponents or division by a variable.

In standard form, polynomials prefer to be expressed. In addition, the exponents are arranged in descending order because they don't contain any similar terms (largest to smallest).

The sum of two polynomial is

⇒6s²t – 2st² + 4s²t – 3st²

= 6s²t + 4s²t – 3st²– 2st²

= 10s²t – 5st²

= 5(2s²t – st²)

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Full question

What is true about the sum of the two polynomials?

6s²t – 2st² and  4s²t – 3st²

Answer:

All of them approach 9 when x=0

Step-by-step explanation:

Answer:

a. sin 300 = -∛3/2, cos 300 = 1/2

b. sin -225 = √2/2, cos -225 = √2/2

c. sin 5π/6 = 1/2, cos 5π/6 = -3√2

d. sin -4π/3 = √3/2, cos -4π/3 = -1/2

Step-by-step explanation:

See unit circle

12,000$Step-by-step explanation

Answer:

Hope that helps! :)

-Aphrodite

Step-by-step explanation:

The value of k is 3. We have to equal the distance between PA and PB and then solve the equation by squaring both side.

Given is that P(2k, k) is equidistance from A(-2, 4) and B(7, -5).

First, we try to understand what is distance formula between 2 points

let's suppose we have 2 points (x1, y1) and (x2, y2).

Find the distance between them.

The separation between two points the coordinates of two points in space are used in the formula. In coordinate geometry, a two-dimensional or three-dimensional space can be used to calculate the distance between two points using the distance formula. The Pythagoras theorem is also applied to the distance formula for two points.

The length of the line segment bridging two points on a plane is known as the distance between the points. d=√(x2 - x1)^2 + (y2 - y1)^2 is a common formula to calculate the distance between two points. This equation can be used to calculate the separation between any two locations on an x-y plane or coordinate plane.

Given that PA = PB.

First, find what is PA

[tex]\sqrt{(2k+2)^2 + (k-4)^2}[/tex]

Here we will use the formula of

(a + b)^2  = a^2 + 2ab + b^2

(a - b)^2 = a^2 -2ab + b^2

[tex]\sqrt{4k^2+8k + 4 + k^2 -8k + 16}[/tex]

[tex]\sqrt{5k^2+20}[/tex].

Now find what is PB.

[tex]\sqrt{(2k-7)^2 + (k+5)^2}[/tex]

[tex]\sqrt{4k^2 + 49 -28k + k^2 + 25 + 10k}[/tex]

[tex]\sqrt{5k^2 - 18k + 74}[/tex]

PA = PB.

[tex]\sqrt{5k^2 + 20 } = \sqrt{5k^2 -18k + 74}[/tex]

squaring both sides.

5k^2 + 20 = 5k^2 -18k + 74

18k  =  74-20

18k = 54

k = 3.

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