What is the answer to n + 21 = 64

The square root of 5x equals 10

2.45 + = 3 What do I add to get to three. Is it 15?

X=2y+7 x=y+4 with substitution

Find all of the polar coordinates for (6, 31 degrees)

Identify the two whole numbers between which the product lies 7*8/10

If I was paying 875. now I pay 955. how much more am I paying

A belt and a wallet cost $42, while seven belts and four wallets cost $213. A) how much do four belts and four wallets cost? B) how much do three belts cost?

Qasim and Alejandra both earn $15 an hour at their job. This week Alejandra worked three hours more than Qasim. If h represents the number of hours Qasim worked, and in total they earned $195, how many hours did each person work?

What is the sum of 0.423 and 4.7

The data set below has an outlier 2,10,10,11,11.12,12,12,13,14,14 Which value is changed the most by removing the outlier