What is the value of y in the equation y-7=21

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.

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

2 2/5 divided by (-1/4) ?