4 (x-5) = 4x-20

solve this equation, and how many solutions are there?

Find the area of a circle with radius 8.5m to the nearest square unit

What is the mean of the set of numbers {-11,22,-2,-3}

In which number does one digit 6 have the value of 1/100 of the other digit 6? The answers given are 66.04,56.60,46.06, and 40.66, which is the correct answer?

Carolina has a piece of fabric that is 1/8 yards in length. Robin has a piece of fabric that is 3/4 yards in length. How many times longer is Robin's piece of fabric than Carolina's piece of fabric?

What is equivlent to (a1/2 * b1/3) to the 1/2 power?

The sale price for a bicycle is $315. The original price Was first discounted by 50% and then discounted an additional 10%. Find The original price of The bicycle.

Subtract 5/12 from 3/20

What is 2 16/99 as a decimal

A blimp travels 765 feet in 1/4 minute, 1,530 feet in 1/2, and 3,060 feet in 1 minute. Is there a proportional relationship between the distance the blimp travels and the time it travels? justify your answer.

Find an equivalent ratio for the ratio 4 : 5. 400/500 10 : 12 48 to 60 20/30