Bill picked 1/2 of the apples on his grandmothers tree. after bill finished, sally picked 1/3 of the apples that were left on the tree. after sally finished, there were 40 apples left on the tree. how many apples were on the tree before they both picked apples?

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125

Using elimination, what is -4x+2y=-12 4x+8y=-24

Use sigma notation to represent the following series for 9 terms.