The first square number is 1, and the sum of the first 20 square numbers is 2870. Work out the sum of the first 21 square numbers.

Translate the sentence into an equation. Nine more than the quotient of a number and 2 is 7.

If 10% of a number = $12 how much is 5%

Which expression is equivalent to 9 (w+8) ? 72W 9W+72 9W+8 17W

Lisa is 7 years older than her sister Annabelle. Which equation relates Lisa's age (a) to Annabelle's age (b) ?

What is the next term of the geometric sequence? 40/27,20/9,10/3,

The value of y varies directly with x, and y = 4 when x = 10. find y when x = 1. a.-2.5 b. 2.5 c. 0.4 d.-0.4

Multiply. (Examples 1-5) 1. 8 (-12) =

A large university is interested in learning about the average time it takes students to drive to campus. The university sampled 20 students and asked each to provide the amount of time they spent traveling to campus.

Maya earns 72 dollars for working 5 hours. How long will it take for her to earn 216 dollars at the same pay rate?

What is Nine and two hundred thirty-five thousandths in decimals