20x+5y=40 solve for x

The diameters of tennis balls are distributed normally. The mean diameter is 2.7 inches and the standard deviation is 0.3 inches. Find the probability that the diameter of a selected bearing is between 2.5 inches and 3.2 inches.

What is 6x+8=8+7x+2x

What is 3k+2k-6=8k+3

Order the numbers from least to greatest. 1/5, 25%, and 0.2 repeating

Is 7/8 or 11/10 closer to 1 whole? how did you decide?

Farmer joe needs to put up new fence. His garden measures 15 feet by 9 feet. How much fence will he need to put up around his garden?

What are different ways that equal 928,904

James earned $25 selling lemonade. If 80% of this was profit, how much did james spend initially on ingredients?

At 10:00a. m, pharaoh leaves his office traveling by car to deliver a book to Valerie. He stopped to eat lunch for two hours, and then returned directly to his office, arriving at 2:00pm.

Find the mean of the integers 3,-1,0,1,3