Alex has $20, and ellen has $12. alex is saving $3 per day, and ellen is saving $5 per day. after how many days will alex and ellen have the dame amount of money?

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.