A rectangle is 12 feet long and 5 feet wide. if the length of the rectangle is increased by 25% and the width is decreased by 20%, what is the change in area of the rectangle?

How many triangles can be formed from two given angle measures and the length of their included side?

Use substitution to solve the systems of equations y = - 3x + 11 3x - 5y = 71

Expand each of the linear expression below using the distributive property, showing all work and simplifying your answer completely - 3 (-6b+5)

Write - 42/9 as a mixed number in reduced form

What is the answer to the equation - 3 (a+6) for distributive property

Jen solves the equation 100-1/2x=92 to determine the number of questions, x, she answered incorrectly on a test. She began by subtracting 100 from both sides, then multiplying both sides by - 2. Which best describes the accuracy of jen's work?

2x + y = 20 6x - 5 y = 12

What is the greatest common factor of 96 48 84

The perimeter of a rectangle is 100 yd. if its width is four times its length, what is the area?

Find the sum 45+46+47+48 ... + 127+128