7x (45 + 21x) is what I'm looking for

You are designing an athletic field in the shape of a rectangle x meters long capped at two ends by semicircular regions of radius r. The boundary of the field is to be a 400 meter track.

1. For dinner, Josie ate 3/4 of her pizza. Wha fraction is equivalent to? 3/4 A1/4 Bb3/8 C4/6 D6/8

Area of 52 square feet width of 6.5 feet what is the length

A bag contains nine red marbles, nine green marbles, nine blue marbles, and eight yellow marbles. If Lisa draws a random marble from the bag, what is the probability that it will be a red, green, or blue marble?

If an average grade of an English class rise from 70 to 85 what is the approximate percent increase

Solve the inequality: - 7x + 4 ≤ 32

If 120% of a is equal to 80% of b, which of the following is equal to a+b?

What is the solution of 1/3s=1/5

Solve the equation x / 2 - 6 = y

Write an algebraic expression for the word expression: 15 divided by the sum of "d" and 3