Consider the weights in kilograms of a group of teen agers. If the standard deviation is 8.7 kg, what is the variance?

Which number is a factor of 22 but not multiple of 2?

A car takes 4 hours to reach a destination travelling at the speed of 63 km/h. How long will it take to cover the same distance if the car travells at the speed of 56 km/h? Do these quantities (time and speed) vary directly or inversely?

Write an equation to represent the situation. Mrs. Davis bought one pair of pants and two polo shirts for each of her three children. She had $3.09 left after purchasing the clothing items for her children.

If c (x) = 4x - 2 and d (x) = x2 + 5x,

Three times a number added to seven is 22

In angle abc, m angle A = x, m angle B = 2x+2, m angle C = 3x+4. what is value x

The three tools the federal reserve uses to enact monetary policy

To solve a system of equations by substitution what is the best first step

Which rational number does not have a reciprocal

What is the probability of rolling an odd number on a number cube and flipping a coin landing on tails? A) 1/6 B) 1/12 C) 1/4 D) 1/8