The gateway arch in st. louis, missouri, weight about 20,000 tons. write an amount that could be the exact number of tons the arch weights.

Which expressions are equivalent to -6 + 3m

The area of a rectangle is 15+5y square feet. which of the following expressions could be the length of the sides of the rectangle, in feet a. 5 and 3y b. 5 and 3+y c. 5 and 5+y d. 3 and 5+3y

The reflexive property of congruence lets you say that ∠pqr ≅