A rectangle has a perimeter of `52` cm. Its width is `9` cm. what is the length of the rectangle?

For what is the measure of the angle at the top of the shed? a. multiplication of areas b. squaring of areas c. addition of areas d. division of areas

Frank owns a $141,000 home, for which he has a 30-year mortgage in the amount of $700 a month. once he has paid off mortgage, how much will he have paid in investment? a. $111,000 b. $109,000 c. $120,000 d. $141,000

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25