What is the reciprocal of 7/2

A jeweler has five rings, each weighing 18g, made of 20% silver and 80% gold. He decides to melt down the rings and add enough silver to reduce the gold content to 60%. How much silver should he add?

Kaitlin is going to rent a truck for one day. There are two companies she can choose from, and they have the following prices. Company A has no initial fee but charges 90 cents for every mile driven.

Three even numbers sum up to 162. the smallest is half the largest and the middle number is 3/4 the largest. what are the three numbers? enter as a comma separated list.

A tortoise is walking in the desert. It walks for 6.25 meters at a speed of 5 meters per minute. For how many minutes does it walk?

Factor. x^2 - 8x + 16

What is - 2/3 divided by 1/3

Divide 28 in a ratio of 3:4

Whats 4/5*4/9 can it be simplify

What is the greatest factor of - 2x?

Find the unit rate. kenny reads 4/9 page in 3/5 minute