15b^2+20y^3
Find the greatest common factor

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /

The table below shows the number of free throw shots attempted and the number of shots made for the five starting players on the basketball team during practice. each player's goal is to make 80% of her shots.