Tom gave a 10 bill for a 3.49 book how much change should he get back

Mario's weekly poker winnings have a mean of $353 and a standard deviation of $67. Last week he won $185. How many standard deviations from the mean is that?

Round 217.726683718 to the nearest thousandth.

What is the height of 151ft 1in. in inches from the base of a statue to the torch

Which expression is equivalent to 5x + 5y - 2z? Which property justifies the expressions being equivalent?

Use slope and y intercept to graph a line. y=2x-5

Factorise : x^2y^2-16

Jenna was reading the nutrition labels of various types of cereal in the grocery store. She chose one that will provide 30% of the daily amount of vitamin C she needs.

The number of vibrations in a piano string are inversely proportional to its length. A wire 1.25m long vibrates at 510 vibrations/second. To produce 450 vibrations per second, how long should a wire be made

If the radius of a circle is 6in., what is the diameter and circumference of the circle

The ratio of fishing boats to sailboats in a bay is 8:3. There are a total of 24 sailboats in the bay. How many fishing boats are in the bay?