how do i know whether to subtract or divide when isolating a number? (example, 2a, do i subtract or divide?)

1/2 + 1/3 equals? what?

What is the best estimate for 9/10 x 5/11?

There are 52 weeks in 1 year. In the space at the right, make a table and write a function rule relating the number of weeks to the number of years for 1,2,3, and n years. Then find Hana's age in weeks if she is 11 years old.

What is the approximate area of a circle with a diameter of 10 in

The ratio of the angle measures of a triangle is 6:4:2. What is the measure of the largest angle?

A merry go round revolves 2 times per minute, jack is 10 feet from the center while bob is 14 feet from the center

An office uses 478 lb of paper one week. The paper comes in packages that hold 18 lb of paper each. How many packages of paper does the office use each month?

In an AP the seventh term is 38 and the twelfth term is 63. What is the sum of the first twenty terms?

Grandma has 14 red roses and 7 pink roses. How many more red roses than pink roses does she have?

What is the volume of a rectangular prism whose edges measure 3 ft, 3 ft, and 2 ft? 8 ft3 22 ft3 11 ft3 18 ft3