I am thinking of a positive number. If I square it, double the result, take half of that result, and then add 12, I get 21. What is my number?

A closed cardboard box is made with a square top and bottom, and a square horizontal shelf inside that divides the interior in half. A total of 9 square meters of cardboard is used to make the top, sides, bottom, and shelf of the box.

A cube has a volume of 128y^3 cubic millimeters. What is the edge length?

Find the perimeter a book had length of 9 inches and a width of 9 inches. what is the perimeter of the book?

What is a high school Academic Decathlon?

5. Using integers express the following a. 200 above zero b. Withdrawal of Rs 500 c. The depth of a well is 500m d. The height of a mountain is 5000m 6. Give expressions for the following a. X multiplied by 3 is subtracted from 12 b.

Kay has an 80% probability of making a free throw in basketball and each free-throw is independent. Kay gets to take two free throws and must make both to win the game. What is the probability that Kay's team will win the game?

Round the underlined digit 75,254

The GCF of 24 and 32 is

Which is a higher score 3 out of 10 or 5 out of 20?

Annie has 385 flowers she has 238 less than Zoe how many flowers does Zoe have