Simplify the expression 21b4 - 3b I need an answer right away

What are the opposites of 5, - 5.6, 3.35, and 7 1 2?

Any number that is divisible by 3 is divisible by nine

The scale factor of the dilation of segment HG is 1/6 If PG' equals 0.5 units, PG equals __ units.

Evan's soccer team played a total of 19 games in the fall season. Evan scored in about 1/4 of the games. Which number is the closest to the number of games in which Evan scored a goal?

During Febuary, Kevin will water his ivy every third day, and water his cactus every fifth day on wich date will Kevin first water both plants together? and will Kevin water both his plants together in Febuary? explain.

A carpenter is putting a skylight in a roof. If the roof measures 10x + 9 by 7x + 7 and the skylight measures x + 5 by 3x + 3, what is the area of the remaining roof after the skylight is built?

What does principle amount mean

If z varies directly as x and z=30 when x=8 find z when x=4

Which measurement statement is correct? A. There are 2 cups in a pint B. There are pints in a cup C. There are 4 quarts in a pint D. There are 4 pints in quart

What is the surface are of a storage b