Solve for the variable:

2x - 21 = 3 - x

Zach is 3 inches taller than sunny. sunny is x inches tall. write an expression to represent zachs height in inches

Xian and his cousin Kai both collect stamps. Xian has 60 stamps, and Kai has 76 stamps. The boys recently joined different stamp-collecting clubs. Xian's club will send him 20 new stamps per month. Kai's club will send him 16 new stamps per month.

Prime factorization tree of 30

The following data give the prices of seven textbooks randomly selected from a university bookstore. $93 $173 $107 $125 $56 $163 $144 a. Find the mean for these data. Calculate the deviations of the data values from the mean.

How do yo write 51 centimeters as a fraction of a meter?

List three attributes of shapes

What is three to the third power?

3:20 am to 2:00 am is this 24 hours?

What are all the factors up to 15

Are - 3.9 and - 0.99 on the same side or the opposite side of zero?