Dan sold half of his comic books and then bought 9 more. He now has 11. How many did he begin with?

The perimeter of a rectangle is 54cm if the length is 2 more than a number and the width and is 5cm less than twice the same number what is the number

Explain how you could estimate 16% of $118.56 to check if your answer is reasonable.

What's the answer key to the whole geometry book

Explain how can 9*1/4=2 1/2

Express each x in terms of y: 1. 2x - 3 = y 2. 2 + 2x - 1 = 4y 3. 2A + 4x + 3B = 10

If two angles in a triangle add up to138, then what is the size of the third angle

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?