Plzz hel am timed which number is composite

What is the most accurate measurement of 1 pound

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.

What expression is equivalent to (2x-1)(x-3)?