Simplify the expression (9 + 21) (9 - 21).

Which of the following are true statements about any regular polygon? Check all that apply. A. It is convex. B. It is concave. C. It is a quadrilateral. D. Its sides are line segments. E. All of its sides are congruent. F.

4 (4x - 3) = -76 Explain you solution process

A real world problem involving a proportional relationship, explain how you know the relationship is proportional.

What is the difference of the expression below? (12f-8g+3h) - (4f - g + 5h) Must show step by step work.

Lakisha has a total of $8000 to invest in two accounts for 1 year. One account pays 5% simple interest and the other pays 6% simple interest. How much should she invest in each account so the total interest earned is $438?

In the 1980s, the population of Pleasanton decreased by 10%. In the 1990s, its population increased by 30%. How does the population of Pleasanton at the end of the 1990s compare with its population in 1980? A) It is 20% higher. B) It is 23% higher.

7.6 as a simplified fraction

A cheetah traveling at 31 m/s chased its prey for 11 seconds. What distance did the cheetah travel during the chase?

How many unique ways are there to arrange the letters in the word pretty?

Applying Systems of Linear Equations Determine the best method to solve the system of equations. Then solve the system. A roadside vegetable stand sells pumpkins for$5 each and squashes for $3 each.