How much cardboard (surface area) is needed to create a closed box to hold 20 tennis balls. The tennis balls have a diameter of 8 cm, packed in the box as shown.

Ngrid mixes 3.6 pounds of almonds with some raisins to make a trail mix. she divides the trail mix into 12 equal portions. each portion weighs 0.7 pound. how many pounds of raisins did she use to make the trail mix? express the answer to the nearest tenth.

Simplify the expression. -2/5(10+15m-20n)

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction