How can i find the missing value with a range of 18 for the numbers of 13,21,26,26

Suppose you want to know whether the eighth-grade music students at a school spend more time practicing their instruments or playing computer games. Explain how you would get a representative sample from the population.

Marcus dives from the surface of the ocean to a reef 18 meters below sea level. What integer represents Marcus location relative to the surface? How far does Marcus have to go to return to the surface?

Which equation has a graph parallel to the graph of 7x=14y-8 A y=-2x-7 B y=-1/2x+4 C y=1/2x+1 D y=2x+9

7a2-9a=24 what is the answer for this

What is the domain and range for { (0,-5), (1,3), (2,2), (0,4) (-5,6), (3,4) }

You want the volume of the box to be 9 cubic inches. Find the rational solution (s) of the equation. Then use polynomial long division to find the other solution (s). What are the possible side lengths of the box?

A couple has 4 children ages 9, 6, 4, and 1. What is the probability that they are all girls?

Use the quadratic formula to solve 2y² + 6y - 8 = 0. {-4, - 1} {4, - 1} {-4, 1} {4, 1}

Find all real zeros of the function y = - 3x+9

Factor the following expression using the GCF 10dr-60r