A square classroom has sides that are 21 feet long. what is the room's perimeter

What is the greatest common factor of the terms in the excerpt 21 x - 18 x + 28 x y

This is for a project about shows in my English class, I have been stumped on this for hours because I can't figure out how to write the equation. Time in Hell moves 120 times faster than it does on Earth.

Which set of numbers does 1.18 belong too?

In 2005, the price of a tv was $1599.00. In 2002, the price of the same type of tv has dropped to $399.00 Calculate the percent of decrease

Simplify (-10mn^3-4n^4) - (-2n^4-7mn^3-6n^3) - (5n^3+6mn^3)

Rewrite the following expression in three different ways 5 (6-2z)

What is number pattern

A triangle has sides with lengths of 60 yards, 63 yards, and 87 yards. Is it a right triangle? Yes or No

The squirrel stored seven more than three times as many nuts as the chipmunk. The chipmunk stored x acorns. Write an expression that shows how many acorns the squirrel stored.

The same sequence may be defined in three ways: 1) f (x) = 6x + 5 for x = {1, 2, 3, ... }, 2) a1 = 11 and an + 1 = an + 6 for n = {1, 2, 3, ... } and 3) an = 11 + 6 (n - 1) for n = {1, 2, 3, ... }.