If y varies directly as 'x' and inversely as 'z', and 'y = 5 when 'x = 4' and 'z = 31, find y' when x = 8' and 'z = 5.

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

Can (2,3 and square root 10) be sides ona right triangle?

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"