A bowl contains 21 pieces of candy: 3 cherry, 10 lemon, and 8 grape. How many additional cherry pieces must be added to the bowl so that the probability of randomly selecting a cherry piece is 2/5?

After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? check all that apply. a. 9% + 3x2 = 14 + x-1 b. -x+ + 4x + 7 = -32-9 c. 5x + 4 = 3x4 - 2 d. 2x2 + x2 + x = 30

Explain how you divide powers with like bases.discuss why the bases have to be the same.how are these rules similar to the rules for multiplying powers with like bases.

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.