Which circles have a circumference of 20pi units? Choose all answers that are correct. a) a circle with a diameter of 40 units; b) a circle with a radius of 10 units; c) a circle with a diameter of 20 units; d) a circle with a radius of 20 units?

Answers

Answer 1

Answer: So, keep in mind that for a circle, circumference equals pi times the diameter. So, C=pi*d. In this problem, 20pi=pi*d. We can solve for d by dividing both sides by pi, for inverse operations: 20pi/pi=(pi*d)/pi. d=20. So, the diameter is 20 units. Finally, keep in mind that the radius is half the diameter. So, the radius is 20/2 units, or 10 units.

Answer: B, C

Related Questions

How to multiply 2 1 /2 multiply 1/10
The Pet Palace is replacing its dog training arena with a new arena with dimensions thatare twice as large ? Old arena 10ft in ht base 15ft.New arena 20ft in ht base 30ft How much greater is the new arena compare to the old one.answers given (a)450ft²(b) 280ft²(c)225ft²(d) 300ft²
which figure appears to have only 1 line of symmetry AND YOU ARE GOING TO HAVE TO OPEN THE PICTURE FOR YOU TO SEE THE QUESTION
FindtheInversey = x+10/7
WILL MARK BRAINLIEST!The multipliers of this system of equations have been determined to create opposite terms of the y-variable.4 (one-fourth x minus three-fourths y = 34) right-arrow x minus 3 y = 136 24 (three-fourths x + one-eighth y = negative 12) right-arrow 18 x + 3 y = negative 288

Danielle wants to purchase some clothes. He has $75. He buys one leather jacket for $39 and 3 pairs of socks. Each pair of socks cost the same price. Determine the price of one pair of socks.

Answers

39 + 3x = 75

Solve for X.

subtract 39 from 75.

then divide by 3.

12% of 72 is what number?

Answers

The percentage of any number can be found by the method described below. It always has to be remembered that any percentage given can be determined by multiplying the percentage number with the number from which the percentage has to be determined.
12% of 72 = (12/100) * 72
= 0.12 * 72
= 8.64
8.64 is 12% of 72. Determiningany kind of percentage will not be a challenge for anybody if the aboveprocedure is followed step by step.

Evaluate g(n-7) if g(x) =x^2-5 / 3x

Answers

Answer:

$g(n-7)=(n^2-14n+44)/(3n-21)$

Step-by-step explanation:

The given function is

$g(x)=(x^2-5)/(3x)$

To find g(n-7), we substitute x=n-7 to obtain;

$g(n-7)=((n-7)^2-5)/(3(n-7))$

Expand the parenthesis to obtain;

$g(n-7)=(n^2-14n+49-5)/(3n-21)$

Simplify:

$g(n-7)=(n^2-14n+44)/(3n-21)$

There are 182 seats in a theater.The seats are evenly divided into 13 rows.HHow many seats are in each row?

Answers

182 / 13 = 14
There are 14 seats in each row

14 because when you divide 183(the total amount of seats) by 13 (the amount of rows) you get 14.

How to find a fraction between the fractions 14/20 and 15/20

Answers

You can double the fractions, so instead of 14/20 and 15/20 you have 28/40 and 30/40. The fractions still equal the same amount. Between theses two new fractions is the fraction 29/40.
So, 29/40 is between 14/20 and 15/20.

An airplane flight has 228 seats. The probability that a person who buys a ticket actually goes on that flight is about 95%. If the airline wants to fill all the seats on the flight, how many tickets should it sell?A. Show your work.

B. Should your answer be more than 228 or less? Explain.

Answers

there should be 240 tickets sold

I made a proportion by doing 228/95 and equaling it to x/100

x= the number of seats that needs to be sold

I crossed multiplied
and got
95x=228×100

228×100=22800

95x=22800

then I diveded both sides by 95 and got

x=240

hope this helps :)

Final answer:

The airline should sell 217 tickets to have a 95% probability that all seats will be filled.

Explanation:

To determine how many tickets the airline should sell, we need to find the number of tickets that corresponds to a 95% probability of a person actually going on the flight. We can think of this as finding the number of tickets that gives us a 95% confidence level.

We can use the formula for confidence interval to find the number of tickets:

Number of tickets = (Desired confidence level) × (Total number of seats)

Number of tickets = 0.95 × 228 = 216.6

Since we can't sell a fraction of a ticket, the airline should sell 217 tickets to have a 95% probability that all seats will be filled.

Learn more about Probability here:

brainly.com/question/32117953

#SPJ3

Other Questions

What is the surface area of a rectangle with 5mm of length, 4mm of width, and a 7mm of height

Equation 1:Ax+By=C Equation 2:Dx+Ey=F A, B, C, D, E, and F are non-zero real numbers. Which of the following could replace equation 1 and still have the same solution? Select all that apply. A. A multiple of Equation 1. B. The sum of Equation 1 and Equation 2 C. An equation that replaces only the coefficient of x with the sum of the coefficients of x in Equation 1 and Equation 2. D. An equation that replaces only the coefficient of y with the sum of the coefficients of y in Equation 1 and Equation 2. E. The sum of a multiple of Equation 1 and Equation 2.

The volume of a box is 400in3. if the height is 10in and the length is 8in, what is the width of the box (volume=l•w•h) 5in, 10in, 17in, or 22in?

What does this mean