How many ways are there to put 4 balls in 3 boxes if the balls are distinguishable and the boxes are distinguishable?

Aline parallel to a triangle's side splits ab into lengths of x - 5 and x + 2. the other side, ac, is split into lengths of x and x + 12. what is the length of ac? a) 12 b) 24 c) 36 d)

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a

Find the unit rate for: 75% high-fiber chimp food to 25% high -protein chimp food.