MATHEMATICS HIGH SCHOOL

HELP PLS!! What is the diameter of a circle whose circumference is 16pi centimeters?32 cm
16 cm
4 cm
8 cm
HELP PLS!! What is the diameter of a circle whose - 1

Answers

Answer 1
Answer: It should be 8 cm because 8 is half of 16 and diameter should be half of radius
Answer 2
Answer:

answer: 8

Explanation:

Use the formula for the area of a circle:

A = π r 2

Here, the area is  16 π

16 π = π r 2  

Divide both sides by  

16 = r 2

Take the square root of both sides:

√ 16 = √ r 2

4 = r

Since the radius of the circle is  

4

, the diameter is twice that:

d = 4 × 2 = 8

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Jasmine sold 30 bracelets on Monday and 15 bracelets a day for the next few days. She sold a total of 105 bracelets. Write an equation that can be solved to determine the number of additional days, d, she sold bracelets

Answers

Answer:

30 + 15d = 105, I think

Step-by-step explanation:

To determine whether voters would be willing to vote for a tax increase to improve the city's schools, the board of education surveys 500 parents of children in the city's schools. Why is this sample likely to be biased?

A.The entire population of the city was not surveyed.

B.Parents of school children are too busy to be bothered with surveys.

C.There are not enough people in the sample.

D.Parents of school children are more likely to be willing to pay more to improve schools.

Answers

B.

This is because, the people who conduct the survey and came to the conclusion of B are making an assumption that they are too busy. This is biased because from the point of view of THEM or even the education board, this could be manipulated in such a way that is not factual. 

So in a nutshell, B is bias because it is not 100% factual. Remember, it's all about perspective. 

A camera rental company charges a fixed amount plus a fee based on the number of days for which the camera is rented. The graph below shows the amount paid for a different number of days to rent the camera: A graph titled Camera Rentals plots the Number of Days on the x axis and the Amount in dollars on the y axis. A straight line joins the ordered pairs 0, 40 and 4, 120.

What is the fixed amount charged?

$20
$30
$40
$80

Answers

Answer:

$40

Step-by-step explanation:

We are given two points (0, 40) and (4, 120).

Now to find the equation which represents A graph titled Camera Rentals plots the Number of Days on the x axis and the Amount in dollars on the y axis.

To Find equation we will use two point slope form.

Formula: y-y_1=(y_2-y_1)/(x_2-x_1)(x-x_1)

(x_1,y_1)=(0,40)

(x_2,y_2)=(4,120)

Substitute the values in the formula

y-40=(120-40)/(4-0)(x-0)

y-40=(80)/(4)x

y-40=20x

y=20x+40

The equation represents the situation : y=20x+40

where x is the number of days

y is the Amount in dollars

Now we are supposed to find the fixed amount charged.

So, we need to substitute x i.e. number of days=0

So, y=20(0)+40

y=40

Hence the fixed amount charged is $40.
Given:
x   y
0  40
4  120

y = fixed amount + v(x)
y = 40 + v(0)
y = 40

y = 40 + v(x)
120 = 40 + v(4)
120 - 40 = v(4)
80 = v(4)
80/4 = v
20 = v

y = 40 + 20x

The fixed amount charged is 40.

The variable amount is 20 per day.

(x^3 + y^3)/(x - y) divide the polynomials and show your work please.

Answers

Please see attached.

I hope this helps.

What is the sum?

(9c-8) + (2c-6)

Answers

Answer:

The sum is 11c - 14.
11c−14 this is the answer good luck

Explain what Nate did correctly.
Explain the mistake Nate made.

Answers

Answer:

Nate correctly inserted the x and y values. Nate did not put in the correct x and y values.

Step-by-step explanation:

Since this is point slope formula, you must put the same coordinate. Ex: (Y1, X1)

So a correct point slope formula would be: y-(-5)= 5(x-1)

Sinne y-y1= m(x-x1_

As, y1 = coordinate #1... x1 = coordinate of #1 ,,, m= slope
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