Diego's mother is twice as old as he is. She is also as old as the sum of the ages of Diego and both of his younger twin brothers. The twins are 11 years old. Find the age of Diego.

Show the tens fact you used. Write the difference.

2x+ky=7 and 4x-9y=4 find value of k if matrix of coefficients is singular

Erin delivers flowers. She earns $5.15 an hour plus tips. In one 40-hour workweek, she earned $153.00 is tips. Find her total income for the week.

There are 10 marbles in a bag: 1 blue, 4 yellow, 3 red, and 2 white. If you choose a marble at random, which is the probability that you will NOT choose white?

What 1/6 divided by 5

Find the value of: 2.7^2 + 3.9^2

A store is having a sale today jim's first purchase he bought 5 pounds of almonds and then he bought 3 pounds of jelly beans the total cost is $17 what is the price of the almonds and the jelly beans separately

How to find the axis of symmetry - 2 (x - 4) ^2 + 2

It takes 12 cups of chicken broth to make soup. how much is this in quarts?

What is the surface area of a triangular pyramid if each face has an area of 80 m2?