Using 2,4,6,8, and 10 write an expression the equals 20

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

Aline passes through (1,-5) and(-3,7) write an equation for the line in point slope form rewrite the equation in slope intercept form