How many cups of pure water should be mixed with 9.5 cups of a 40% acid solution to dilate it into a 4% acid solution

What are the geometric series of a1 and r of the geometric series? 2-2+2-2+2

Twelve less than the one-fifth of a number is - 7 how do you write that in a equation?

What number can be used to complete the volume statement for the cone? A cone with height 4 meters and diameter 3 meters. Volume = Pi meters cubed

Della bought a tree seedling that was 2 1/4 feet tall. during the first year, it grew 1 1/6 feet. after 2 years it was 5 feet tall. how much did the seedling grow during the 2nd year?

Use the substitution method to solve this system. y = x - 4 and - 2x + y = - 7

Tony plans to deposit $1,000 at the end of each of the next three years. if his funds earn 5% compounded annually, how much will he have at the end of three years?

It is believed that the minimum number of calories required for the average female to avoid starvation is 1200 calories. The brain requires about 12% of the calories. How many calories does the brain require?

Moshe is playing cards and is grouping the cards that have already been played by suit (hearts, clubs, diamonds, and spades). Moshe is using what type of encoding?

A bag with 26 tiles with the letters A through Z. Find the probability of drawing two vowels with replacement

The floor at a roller skating rink is 72.25 feet long and 51.5 feet wide. How much longer is the rink than it is wide? A 671.0 ft B 67.10 ft C 21.25 ft D 20.75 ft