You asked your classmates to name their favorite type of music. You found that 12 students like rock, 8 like rap, 6 like R&B, and 4 like jazz. Suppose you made a pie chart to display the data. How many degrees of the circle should represent rock music?

Answers

Answer 1

first we should write the total numbers:
12+8+6+4=30
then we should divide the number 30 by 360(because the pie chart is 360 degrees):
[tex]360 \div 30 = 12[/tex]

now we should multiply 12(the number of students who likes rock) by 12
[tex]12 \times 12 = 144[/tex]
the answer is 144 degrees

Related Questions

Find an equation of the line that satisfies the given conditions. through (−1, −3); perpendicular to the line 2x + 7y + 2 = 0

Answers

2x + 7y + 2 = 0
2(-1) + 7(-3) + 2 = 0
-2 - 21 + 2 = 0
-21 = 0

Using a straightedge draw a random triangle now carefully cut it out next amputate the angles by snipping through adjacents sides now move the angles together so the vertices all touch

Answers

This is usually used as a proof that triangles have 180°. Look at the attached figures. If you cut off angle A, angle B and angle C and rotate them so that their vertices touch, you form a half-circle out of them (or a straight line). We know that half a circle is 1/2 of 360° or 180; therefore all 3 angles in a triangle must add up to 180°.

It should be noted that a triangle is a polygon with three edges and three vertices.

What is a triangle?

A triangle is a simple closed curve or a polygon that is formed by three line segments.

It should be noted that triangles have 180°. In this case, looking at the attached figure, it can be deduced that the addition of the angles equals 180.

Learn more about triangles on:

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At the beginning of this month, the balance of Nelson's checking account was $856.23. So far this month, he has received a paycheck via direct deposit of $876.25, been charged a monthly service fee from his bank of $10.00, used a debit card linked to his account to make a purchase of $23.96, written a check for $104.22 that has already been deposited, and deposited a check written to him for $25.00. What is the current balance of Nelson's checking account?

Answers

$1,619.30

Hope this helps<3

Your answer is $1827.51 : I hope it's correct

please help im confused....

which ordered pair is a solution of the inequality?
2y+6<8
a. (4,13)
b. (-5,2)
c.(0,6)
d.(4,8)

Answers

Hello,

Here is your answer:

The proper answer to this question is option D "(4,8)".

Your answer is D.

If you need anymore help feel free to ask me!

Hope this helps!

which rule describes the translation PQR --> P'Q'R'?

Answers

The "Pre Image" is the image that we started with, so the pink triangle.
The "Image" is the image that we ended with, so the blue triangle.

To determine how far we went from the pre image to the image, we can focus on one point, let's say point "P".

The pre image coordinates for point "P" are 2, 3.
The image coordinates for point "P'" are -1, 0.

To get from x value 2 to x value -3, we subtracted 3.
To get from y value 3 to y value 0, we subtracted 3.

So, our rule for this translation would be A, (x, y) ----> (x-3, y-3).

HELP SOMEONE SMART
What is the solution of the equation? Step by step.

Answers

As with any "solve for" problem, you undo what has been done to the variable, in reverse order.
Subtract 9, divide by 3, take the 5/3 power
.. 3*(a +4)^(3/5) +9 = 36 . . . . . original equation
.. 3*(a +4)^(3/5) = 27
.. (a +4)^(3/5) = 9
.. a +4 = 9^(5/3)
.. a = 9^(5/3) -4 ≈ 34.9407

The formula for volume of this rectangular prism is:

V = 2x 3 + 17x 2 + 46x + 40

Find an expression for the missing side length. Show all of your work for full credit.

Answers

By definition, the volume of a rectangular prism is given by:
[tex]V = (w) * (h) * (l) [/tex]
Where,
l: length
h: height
w: width
Substituting values we have:
[tex]2x ^ 3 + 17x ^ 2 + 46x + 40 = (w) * (x + 2) * (x + 4) [/tex]
From here, we clear the value of w.
[tex]w = (2x ^ 3 + 17x ^ 2 + 46x + 40) / ((x + 2) * (x + 4)) [/tex]
Factoring the numerator we have:
[tex]w = ((x + 2) * (x + 4) * (2x + 5)) / ((x + 2) * (x + 4)) [/tex]
Canceling similar terms we have:
[tex]w = 2x + 5 [/tex]
Answer:
The missing side is of length:
w = 2x + 5

The volume of a rectangular prism is the product of its dimension.

The missing side length is 2x + 5.

The volume is given as:

[tex]\mathbf{V = 2x^3 + 17x^2 + 46x + 40}[/tex]

Let the missing side be y.

So, we have:

[tex]\mathbf{V = (x + 2) \times ( x + 4) \times y}[/tex]

So, we have:

[tex]\mathbf{(x + 2) \times ( x + 4) \times y = 2x^3 + 17x^2 + 46x + 40}[/tex]

Factorize

[tex]\mathbf{(x + 2) \times ( x + 4) \times y = (x + 2) \times (x + 4) \times (2x +5)}[/tex]

Cancel out common factors

[tex]\mathbf{y = (2x +5)}[/tex]

Remove brackets

[tex]\mathbf{y = 2x +5}[/tex]

Hence, the missing side length is 2x + 5.

Answers

1. A. According to the expression a_n=4*a_n-1, each term after a1 is four times the previous term. The first term is -7 as given, 2nd term should be -7*4=-28, 3rd term is -28*4=-112, ... A is the correct answer.

2. B. The sequence is -13, -8, -3, 2... It's obvious that each term is equal to the previous term plus 5. This is an arithmetic sequence with initial term -13 and common difference 5. We know a1=-13, so a_n=-13+5*(n-1). The answer is B.

3. A. We are given a15=-53, a16=-5. The common difference of the arithmetic sequence is -5-(-53)=48. The formula for a_n term is a1+48*(n-1). We know that a15=-13; plug in n=15, a15=-53=a1+48*(15-1), a1=-725. So a_n=-725+48*(n-1).

4. Diverge. We are given a few terms, 11, 44, 176, 704... Observe that each term is four times the previous one. 11*4=44, 44*4=176, 176*4=704... This is a geometric series with common ratio>1. You can keep multiplying by 4 and the series goes to infinity, so it diverges.

5. D. We have -4, -16, -64, -256... Same as above, each term is four times the previous one. The initial term is a1=-4. The common ratio d=4. So a_n=a1*d^(n-1)=-4*4^(n-1)=-4^n. (D).

6. The answer is A. a2=-2, a5=16. Suppose the common ratio is D. a_n=a1*d^(n-1). a2=a1*d; a5=a1*d^4. Plug in a2 and a5: -2=a1*d, 16=a1*d^4. 16/-2=d^3=-8, d=-2, a1=1. So a_n=1*(-2)^(n-1).

7. B. We are given the sequence 4, -24, 144,... Each term is -6 times the previous one. The first term a0=4, the n^th term a_(n-1) is a1*d^n=4*(-6)^n. To express the sum, we simply have to use the sigma notation and sum 4*(-6)^n from n=0 to infinity. The answer is B.

8. D. We are given -3 + 6 + 15 + 24... 132. Each term is equal to the previous one plus 9. First term a0=-3, n^th term a_n-1 is -3+9*n. The last term is 132. 132 =-3+9n, n=15. So we have to sum -3+9n from n=0 to n=15.

9. B. 343 + 512 + 729 + 1000+... 343=7^3, 512=8^3, 729=9^3, 1000=10^3. This is a sequence of perfect cubes. Therefore, the sum is n^3 from n=7 to infinity. (The initial term is 343=7^3).

10. B. We are given 3, 5, 7, 9, ... 21. The common difference is 2. There are (21-3)/2+1=10 terms. The initial term a1=3, and last term is a10=21. The sum is (a1+a10)*10/2=(3+21)*10/2=120.

11. C. 4/3, 16/3, 64/3, 256/3, 1024/3. Each term is four times the previous one. This is a geometric series with initial term a1=4/3 and common ratio r=4. 1024/3 is the 5th term of the sequence. So sum=a1*(1-r^n)/(1-r)=4/3*(1-4^5)/(1-4)=-4/9*-1023=1364/3.

12. B. 10,12,14,... This is an arithmetic sequence. a1=10, and common difference d=2. There are 20 terms (20 rows). a20=a1+d*(n-1)=10+2*(20-1)=48. So the sum S=(a1+an)*n/2=(10+48)*20/2=580.

13. 10 + 20 + 30 + ... + 10n = 5n(n + 1). When n=1, this expression is true, since 10=5*1*(1+1). Suppose when n=k, this statement is true, then when n=k+1, the left side is 10+...+10n+10(n+1), the right side is 5(n+1)(n+2). The left side adds 10(n+1) compared to the previous one. The right side adds 5(n+1)(n+2)-5n(n+1)=5(n+1)(n+2-n)=10(n+1). So the statement holds true.

14. The height at week 0 is a0=300 (initial height). Common difference is 4.2 (weekly increment). a_n=300+4.2n. At week n, the height of the tree is 300+4.2*n centimeters.

Hello,
Please, see the detailed solution in the attached files.
Thanks

Between the ages of 24 months and 6 years, the average child will gain _____ in height. 1 foot 1.5 feet 8 inches 4 inches

Answers

At that specific age range, the average child grows about 3in per year 24 months is 2 years old. 6-2 =4. there are 4 years that pass.

3in*4years =12in or 1 foot

Which expressions are completely factored?

Select each correct answer.

A. 16a^5−20a^3=4^3(4a^2−5)

B. 24a^4+18=6(4a^4+3)

C. 30a^6−24a^2=3a^2(10a^4−8)

D. 12a^3+8a=4(3a^3+2a)

Answers

I’m pretty sure all of them are completely factored.

Answer:

Step-by-step explanation:

The only thing that you can factor out of B is 6, while the others are not in simplest form. Answer C can still factor out 2 and answer choice D can still factor out a. Answer choice can still be factored further using difference of squares.

Please help I have 2 questions. Thank you.

Answers

1 is 30
2 is
3x + 2 = 2
3x = 0
x = 0

Consider the table below.

x y
-3 0.5
-2 1
-1 2.5
0 5
1 8.5

y=ax2+bx

Complete the standard form equation representing the quadratic relationship displayed above, where a, b, and c are constants.

Answers

The standard equation is:
y = ax2 + bx + c
For this case, what we need to do is to evaluate three points in the standard equation and solve the system of three equations with three unknowns.
We have then:
For (-3, 0.5):
0.5 = 9a - 3b + c
For (0, 5):
5 = c
For (1, 8.5):
8.5 = a + b + c
We solve the system:
0.5 = 9a - 3b + c
8.5 = a + b + c
5 = c
From here we get:
a = 1/2
b = 3
c = 5
The standard equation is:
y = (1/2) x ^ 2 + 3x + 5
Answer:
y = (1/2) x ^ 2 + 3x + 5

Answer:

y=x^2-6x+13

Step-by-step explanation:

Part A: Jake rented a kayak at $26 for 3 hours. If he rents the same kayak for 5 hours, he has to pay a total rent of $42. Write an equation in the standard form to represent the total rent (y) that Jake has to pay for renting the kayak for x hours. (4 points)

Part B: Write the equation obtained in Part A using function notation. (2 points)

Part C: Describe the steps to graph the equation obtained above on the coordinate axes. Mention the labels on the axes and the intervals. (4 points)

Answers

We can write the information we know as ordered pairs. The independent variable, or x, in this case would be the amount of time, and the dependent variable, or y, would be the amount of money. This is because the amount of money charged changes depending on the amount of time. This gives us the ordered pairs (3, 26) and (5, 42). Using the formula for slope we have:
[tex]m=\frac{y_2-y_1}{x_2-x_1} \\ \\=\frac{42-26}{5-3} \\ \\=\frac{16}{2}=8[/tex]. A slope of 8 tells us that the hourly rental is $8. We can use this to back up and see what the rental fee is. When renting the kayak for 3 hours, Jake paid 26. We know that it costs $8 per hour; 8(3) = 24. This leaves us 26-24=$2 for the rental fee. The equation would then be
y = 8x + 2.
Writing this as a function would be f(x) = 8x + 2.
To graph this, we would label the x-axis as time (hours) and the y-axis as money (dollars). We would go up to the y-intercept, 2, and plot our point. (The y-intercept is 2 because in the form y=mx+b, b is the y-intercept; that's where our 2 is.) From here, we know the slope is 8=8/1, so we would go up 8 and over 1 to the right to plot our next point. Then we would draw our line between these two points.

Answer:

8x+2

fx= 8x+2

Step-by-step explanation:

Triangle RST is congruent to triangle WXY. If the area of triangle WXY is 20 square inches, then the area of triangle RST is _____.
40 in2
10 in2
20 in2
80 in2

Answers

The area of triangle RST is also 20 20 square inches

What are congruent triangles?

Triangles having equal side lengths and equal corresponding angles measures are called congruent triangles.

Given that, triangle RST is congruent to triangle WXY, the area of triangle WXY is 20 square inches,

We are asked to find the area of triangle RST,

Since, triangles RST and WXY are congruent, therefore, they will have congruent sides and angles,

That means, they will have equal area also,

ar (Δ RST) = ar (Δ WXY)

Therefore,

ar (Δ RST) = 20 square inches

Hence, the area of triangle RST is also 20 20 square inches

Learn more about congruent triangles, click;

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Jacey obtains a 30-year 6/2 ARM at 4% with a 2/6 cap structure in the amount of $224,500. What is the monthly payment during the initial period?

Answers

The answer is $1,071.80.

General Idea:

We need to make use of the below formula to find the monthly payment..

[tex] Monthly \; Payment\; =\; \frac{P \times \frac{r}{12}}{(1-(1+\frac{r}{12})^{-m})} \\ \\ Where:\\ P\; is\; Principal\\ r\; is\; rate\; in\; decimal\; form\\ m\; is\; number\; of\; monthly\; payments [/tex]

Applying the concept:

Given:

[tex] P=\$224,500\\ r=4\%=0.04\\ m=30\; year \times 12 \; months/year=360\\ [/tex]

Substituting the given in the formula we will get the monthly payment.

[tex] Monthly\; Payment\; =\; \frac{224500 \times \frac{0.04}{12}}{(1-(1+\frac{0.04}{12})^{-360})} =\frac{\frac{8980}{12}}{(1-0.301796)} =\frac{748.3333}{0.698204} \\ \\ Monthly \; Payment= \$1071.7975 [/tex]

Conclusion:

The monthly payment during the initial period is $1072.

simplify the expression (2-5i)-(4-4i)

Answers

(2 - 5i) - (4 - 4i)
-2 - i is your answer. Hope it helps! :) If you could vote my answer as the brainiest, that would be awesome! :)

LM¯¯¯¯¯¯¯ is the midsegment of trapezoid ABCD . AB=78 and DC=142 . What is LM ?

Answers

The midsegment has a length equal to the average of the base lengths.

LM = (AB +DC)/2
.. = (78 +142)/2
LM = 110

Find the value of x. The diagram is not drawn to scale.

Answers

Answer:

C. [tex]x=99^{\circ}[/tex]

Step-by-step explanation:

We have been given a image. We are asked to find the value of x.

We can see that our given figure is a quadrilateral. We know that all interior angles of a quadrilateral add up-to 360 degrees.

[tex]x^{\circ}+y^{\circ}+125^{\circ}+72^{\circ}=360^{\circ}[/tex]

We can see that y and 116 degrees angles are linear angles, so we can set an equation as:

[tex]y^{\circ}+116^{\circ}=180^{\circ}[/tex]

[tex]y^{\circ}+116^{\circ}-116^{\circ}=180^{\circ}-116^{\circ}[/tex]

[tex]y=64^{\circ}[/tex]

Substitute [tex]y=64^{\circ}[/tex] in the equation:

[tex]x^{\circ}+y^{\circ}+125^{\circ}+72^{\circ}=360^{\circ}[/tex]

[tex]x^{\circ}+64^{\circ}+125^{\circ}+72^{\circ}=360^{\circ}[/tex]

[tex]x^{\circ}+261^{\circ}=360^{\circ}[/tex]

[tex]x^{\circ}+261^{\circ}-261^{\circ}=360^{\circ}-261^{\circ}[/tex]

[tex]x^{\circ}=99^{\circ}[/tex]

[tex]x=99[/tex]

Therefore, the value of x is 99.

A toy rocket is launched from a platform 29 feet above the ground at a speed of 79 feet per second. The height of the rocket in feet is given by the polynomial −16t^2 + 79t + 29, where t is the time in seconds. How high will the rocket be after 3 seconds?

Answers

:)

Height = -16t² + 79t + 29

3 sec means t = 3, we substitute t with 3

H = -16(3)² + 79(3) + 29
= -144 + 237 +29
= 122 feet

Answer:

[tex]h(3)=122ft[/tex]

Step-by-step explanation:

The problem gives you everything, basically you only have to replace the given value, which is t=3 into the equation:

[tex]h(t)=-16t^2+79t+29[/tex]

But, let's do a deeper analysis. This a projectile motion problem. For this kind of problems there are some fundamental equation. For example, we need to find the vertical displacement of the rocket. So the equation for the vertical displacement in projectile motion is given by:

[tex]h_f-h_o=v_ot-\frac{1}{2}gt^2[/tex] (1)

Where:

[tex]h_f=Final\hspace{3}height\\h_o=Initial\hspace{3}height\\t=Time\\v_o=Initial\hspace{3}velocity\\g=Gravitational\hspace{3}acceleration[/tex]

Isolating [tex]h_f[/tex] and rearranging the equation (1) we get:

[tex]h_f=-\frac{1}{2}gt^2+v_ot+h_o[/tex]

Looks familiar? It has exactly the same form of the equation given by the problem. As you can see, if you replace the values of the speed and the initial position given by the problem, we got the same equation. Besides gravitational acceleration is a constant and its value is approximately 32ft/s^2, dividing it by 2, we get 16. Having this in mind, let's resolve the problem:

[tex]h(3)=-16(3)^2+79(3)+29=-144+237+29=266-144=122ft[/tex]

A telephone pole is perpendicular to the ground. What is the size of the angle between the ground and the telephone pole? How do you know?

Answers

90 degrees
perpendicular just means the angle between the two planes, in this case the ground and the pole, is 90 deg :)

The values √8 and √14 are plotted on the number line.

What is the approximate difference in tenths between the two values?
0.5
0.9
1.1
2.4

Answers

Firstly, you have to count the number of spaces between the two points on the line, which gives you 9. Now, remember that you are counting between tenths on a number line, so you divide 9 by 10 to give you your answer, 0.9.

Answer:

The correct option is 2.

Step-by-step explanation:

The values √8 and √14 are plotted on the number line.

From the given number line it is clear that

[tex]\sqrt{8}\approx 2.8[/tex]

[tex]\sqrt{14}\approx 3.7[/tex]

We have to find the approximate difference in tenths between the two values √8 and √14.

[tex]\sqrt{14}-\sqrt{8}\approx 3.7-2.8[/tex]

[tex]\sqrt{14}-\sqrt{8}\approx 0.9[/tex]

The approximate difference in tenths between the two values is 0.9.

Therefore the correct option is 2.

Each of the 14 students in the art club needs 4 ounces of paint for a project. The art store sells paint only in 8-ounce bottles. How many bottles of paint does the art club president need to buy for the project?

Answers

Each bottle serves 2 students. He needs to buy 14/2 = 7 bottles.

Answer: The art club president need to buy 14 bottles of paint for the project.

Step-by-step explanation: Given that each of the 14 students in the art club needs 4 ounces of paint for a project. The art store sells paint only in 8-ounce bottles.

We are to find the number of bottles of paint that the art club president need to buy for the project.

We will be using the unitary method to solve the given problem.

Number of bottles filled by 8 ounces of paint = 1.

So, the number of bottles filled by 1 ounce of paint is

[tex]\dfrac{1}{8}.[/tex]

So, the number of bottles filled by 4 ounces of paint will be

[tex]\dfrac{1}{8}\times4=\dfrac{1}{2}.[/tex]

Now, number of bottles of paint needed by 1 student [tex]=\dfrac{1}{2}.[/tex]

Therefore, the number of bottles of paint needed by 14 students will be

[tex]\dfrac{1}{2}\times14=7.[/tex]

Thus, the art club president need to buy 14 bottles of paint for the project.

Which is the formula for the volume of a sphere with diameter d?

A. S= 4πd²
B. S= πd²
C. S= [tex] \frac{4}{3} [/tex]πd³
D. S= [tex] \frac{1}{6} [/tex]πd³

Answers

The answer for this problem is D because the diameter for the sphere is d, so the radius is 1/2d. Substituting that into the formula of finding a circle with radius x is [tex]/frac4/3 pi * x^3. We get 1/3* pi*1/2d^3, which equals 1/6*pi*d^3, or D.

y=x-8/x^2+4x-5 find any points of discontinuity for the rational function

a. x=5, x=1
b. x=-5, x=1
c. x=8
d. x=5, x=-1

Answers

Answer:

x=-5, x=1

Step-by-step explanation:

y=x-8/x^2+4x-5

[tex]y=\frac{x-8}{x^2+4x-5}[/tex]

When denominator becomes 0 in a rational function then there will be a break in the graph

To find any points of discontinuity for the rational function , we set the denominator =0 and solve for x

x^2 + 4x -5 =0

Now we factor x^2 +4x -5

product is -5 and sum = 4

5 * (-1) = -5

5 +(-1) = 4

(x+5)(x-1) =0

set each factor =0 and solve for x

x+5=0 , so x= -5

x-1=0 , so x= 1

x=-5, x=1 are the points of discontinuity for the rational function

Answer:

x=-5 , X=1

Step-by-step explanation:

If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11? mc018-1.jpg mc018-2.jpg mc018-3.jpg mc018-4.jpg

Answers

The answer is B: Y=[tex] \frac{18}{5} [/tex](11)

If y varies directly as x, the expression that can used to determine the value of y when x is 11 is y = 18/5 × 11 .

What is the expression that can be used to determine the value of y?

The equation that can be used to represent direct variation is:

y= kx

Where:

y = dependent variable k= constant of proportionality x = independent variable

k = y/x

k = 18/5

y = 18/5 × 11

To learn more about direct variation, please check: https://brainly.com/question/4838941

helppppppppppppppppppppppp

Answers

2x ^ 2 = 4x-7
We rewrite the polynomial:
2x ^ 2-4x + 7 = 0
Applying the resolver we have:
x = (- b +/- root (b ^ 2-4ac)) / 2a
x = (- (- 4) +/- root ((- 4) ^ 2-4 (2) (7))) / 2 (2)
x = (- (- 4) +/- root (16-56)) / 2 (2)
x = (- (- 4) +/- root (-40)) / 4
x = (2 +/- root (-10)) / 2
x = (2 +/- root (10) * i) / 2
Answer:
x = (2 +/- root (10) * i) / 2
option 3

Which are the solutions to the quadratic equation 4x^2=64?

A. x=-16 and x=16

B. x=-8 and x=8

C. x=-4 and x=4

D.x=-2 and x=2

Answers

x=4 and x=-4 Your answer would be C.

Answer: x= -4, 4

Step-by-step explanation:

F(x) = x4/5(x − 6)2 find the critical numbers of the function

Answers

You can find the critical numbers by finding the derivative of the function and solving for 0.

F(x) = x(4/5)(x-6)(2) = x(8/5)(x-6) = (8/5)(x^2 - 6x)

Taking the derivative:
F'(x) = (8/5)(2x - 6)
F'(x) = 0 at x = 3,

critical number = 3

Final answer:

To find the critical numbers, differentiate the function using the product rule, set the derivative equal to zero, and solve for x. Critical numbers are where the derivative is zero or undefined, provided they are within the domain of the function.

Explanation:

To find the critical numbers of the function f(x) = x4/5(x − 6)2, you need to locate the values of x where the first derivative of the function is either zero or undefined. The first derivative can be calculated using the product rule and the power rule.

First, let's find the derivative:

f'(x) = d/dx [x4/5] * (x - 6)2 + x4/5 * d/dx [(x - 6)2]

After simplifying, you will get a derivative function where you can then set it equal to zero to find the critical points. The points where the derivative is zero are potential local maxima, minima, or points of inflection. Additionally, points where the derivative is undefined can also be critical points, if they are within the domain of the function.

Once you calculate and simplify the derivative, set it equal to zero and solve for x. You might find that you get explicit values of x, which are the critical numbers of the function. If the function's derivative does not exist at some point, that will also be a critical number.

Remember, critical numbers are only relevant if they are within the domain of the original function.

a business analyst makes 20$ an hour for the first 42 hours he works during a week and 28$ an hour for each worked over 42 hours. which piecewise equation models his weekly pay y in dollars as it relates to the number of hours x that he has worked during the week

Answers

y=(20 × 42) + [28 × (x-42)]

Answer:

[tex]y=28(x-42)+840[/tex]

Step-by-step explanation:

Let he works for x hours in total.

We are given that he makes 20$ an hour for the first 42 hours

So, he earns in 1 hour = 20

He earns in 42 hours = [tex]20 \times42[/tex]

= [tex]840[/tex]

Now we are given that he earns $28 an hour for each hour worked over 42 hours.

Since he worked for 42 hours out of x hours .

So, remaining hours = x-42 hours

So,he earns for x-42 hours = [tex]28\times(x-42)[/tex]

y denotes his total earning of weekly

So, total earning [tex]y=28(x-42)+840[/tex]

Hence piecewise equation models his weekly pay y in dollars as it relates to the number of hours x that he has worked during the week is [tex]y=28(x-42)+840[/tex]

What is the m∠ABC?

1)m∠ABC = 60°
2)m∠ABC = 67°
3)m∠ABC = 120°
4)m∠ABC = 127°

Answers

i believe it is 4)m∠ABC = 127°

we are given

m∠BCD =67

and m∠BDC=60

we know that

m∠ABC is exterior angle

m∠BCD and m∠BDC are interior angles

exterior angle is sum of interior angles

so, we can write it as

m∠ABC=m∠BCD+m∠BDC

now, we can plug values

and we get

m∠ABC=60+67

m∠ABC=127

so, option-4.........Answer

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