Which equation is equivalent to a=2d + 5r

The radius of a circular Frisbee is 9.8 centimeters. Using rounding to the nearest whole number, what is an estimate for the circumference of this circle? A. 50 cm B. 60 cm C. 65 cm D. 72 cm

Given that P (A or B) = 1/3, P (A) = 1/4, and P (A and B) = 1/8, find P (B)

At the biggining of last year, there were 368 students 72 have moved about how many students are still in school?

A box contains n quarters and some dimes. The ratio of quarters to dimes is 1:2. A) Write an expression for the total amount of money in the box. B) If there are 12 quarters, find the total amount of money in the box.

Luis was served 145 grams of meat and 217 grams of vegetable at a meal. what was the total mass of the meat and the vegetable?

3a + 4b = 2 5a + 9b = 1

A bag holds 6 tiles: 2 lettered and 4 numbered. Without looking, you choose a tile. What is the probability of drawing a number?

1. For dinner, Josie ate 3/4 of her pizza. Wha fraction is equivalent to? 3/4

Find the difference 7/x^2-3x - 1/x^2-9

In the equation x=8y, what is the unit rate?