the sum of twice a number and 15 less than the number is the same as the difference between-7 and the number. what is the number

How do you know the quotient of 639:6 is greater than 100 before you actually divide

Ken is driving down the road when a car suddenly pulls out in front of him. He applies the brake sharply and his car goes into a skid. While the car skids, it decelerates at a constant rate of 15 meters / sec2.

Jack wants to know how much water a spherical ball can hold with a radius of 8 cm?

Farmer George is painting 3 chicken coops. He started painting this morning. Now he only has 1 3/4 of a chicken coop left to paint this afternoon. How many chicken coops did Farmer George paint this morning?

Find the reciprocal of 3/20

6x2/5 will be greater or less than 2/5

Over winter break, Raymond worked 12.5 hours at the library and 20.5 hours at a café. The library paid him $13 per hour. If he earned a total of $459.75 from both jobs, how much did the café pay Raymond per hour?

A swimming pool is 15 feet wide, 50 feet long, and has an average depth of 5 feet. How many cubic feet of water will it hold

On a survey, students reported how many minutes it takes them to travel to school. Here are their responses. Find the mean travel time for these students. If necessary, round your answer to the nearest tenth.

What british queen watched and promoted a lacrosse game in 1867?