The ratio of the width to the height of a window is 2: 7. the width of the window is 3ft. write and solve a proportion to find the height

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

Ablock of wood is a cube whose side is x in. long. you cut off a 1-inch thick piece from the entire right side. then you cut off a 3-inch thick piece from the entire top of the remaining shape. the volume of the remaining block is 2,002 in3. what are the dimensions of the original block of wood?

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?