The length of a rectangle is 4 inches more than the width. The area is 21 square inches. Find the dimensions.

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

Sean is his dad build a tiled walkway in their backyard. the walkway will be 6060 feet long and 22 feet wide. the local hardware store sells tiles which are 22 by 22 feet and come in boxes of 66. how many boxes of tiles do they need?

If a and b are real numbers, then |a-b| is always, sometimes or never equal to |b-a| ?