How i can prove the proofs?

In case of an emergency, the school has a calling list so that everyone is called in the least amount of time. Each of the first 3 people on the list calls another 3 people on the list.

The graph below shows a line segment MN: Which of the following equations best represents the line segment MN?

Sonya had 20 minutes to do a three-problem quiz. She spent 10 9 10 minutes on question A and 6 3 5 minutes on question B. How much time did she have left for question C?

The plastic cases used to store compact discs and DVDs are about 1/5 inch thick. A company wants to sell 10 of these cases in plastic wrapping. What is the height of 10 cases?

What is an equivalent fraction for 10%

Courtney and Chris thought of the same number. They multiplied the number by 3 and than increased the product by 5 for the final result of - 55. What number were they thinking of?

Ron walk 0.5 mile on the track in 10 minutes Stevie walk 0.25 miles on the track in six minutes find the unit rate for each walker in miles per hour who is a fast walker

Construct your own division problem with 2 divisor that has a quotient of 6 and a remainder of 12 but is not equivalent to 156 divided by 24 and also 102 divided 15

Solve: (6x^3 - 1x^2 + 1) divided by (2x + 1) a. - 3x^2 + 2x - 1 b. 3x^2 - 2x + 1 c. - 3x^2 + 2x - 1 d. 3x^2 2x - 1

113, 183, 479, 120, 117 What is the mean, median and mode? Make sure to label each answer. Round any decimals to the tenths place. Would mean, median or mode be the best measure to describe the data?