How much energy, in joules, is released when 17 kilograms of granite is cooled from 45°C to 21°C?

A number is divided by 3 less than itself gives a quotient of 8/5?

Michael is 3 times as old as Brandon. 18 years ago, Michael was 9 Times as old is Brandon how old is Brandon now?

What is the 31st term of the sequence below? -108, - 90, - 72, - 54, ...

Whats 2r + 1 if r = 3

Emily got a newjob that guarantees her a 6% raise every year. If she started out making 25,000, how long will it be before she doubles her current salary

Felipe Vasquez bought some 14₵ stamps and the same number of 22₵ stamps. He paid a total of $1.80 for all the stamps. How many of each kind did he buy?

What it 87^4*10^9 divided by 7

8/10x 1 3/5 = ? would be what?

Caroline measured the weight of a dog that came into the veterinary clinic. She determined that her measurement had a margin of error of 0.05 kilogram. What could be the measured weight of the dog?

Inspect the number line which square roots have a difference of about 0.5?