What is the value of r in: 1/7 (105+r) = 20

Tyler has 2 7/16 years of fabric. He used 3/4 yard to make a vest. About how much fabric did he have left?

If there are a number of different sounds being produced simultaneously, the resulting intensity is the sum of the individual intensities. How many decibels louder is the sound of quintuplets crying than the sound of one baby crying?

A number is increased by 40 % and becomes 364. What was the original number?

Jenny is 34 she has a 18yr old son how old did she have her son?

Lauryn's wages were not as much as she had budgeted. How can her budget be modified so there will be a positive actual net income? a. Reduce the food expense by $50. b. Reduce the clothes expense by $75. c. Reduce the recreation expense by $25. d.

Round 630 to the nearest ten

ellen sells mugs that are in boxes in the shape of a cube. The edges of the boxes have a lenght of 1/2 foot. Ellen can completely fill a container in the shape of a rectangular prism with 378 boxes. What is the volume of her container?

1. 7/8 - 1/2 2. A security camera rotates 30° every 10 seconds. how long does it take the camera to rotate 360°?

What is the answer to 6 * 4/5

What is the distance, to the nearest hundredth, from (6, 5) to (-3, - 8) ?