John is 4 years older than his sister Mary. Together, their ages add up to 30. How old is Mary?

Two prime numbers add to make 18 what are they

For which value of x is the equation 3 (3+x) = 15+x true?

If x=3 then what is 3x+4 * x

Five men working six hours a day take eight days to fill a trench. How long does it take 3 men working eight hours a day to fill the same trench.

1. Using the rational root theorem, list the possible zeros: Using p/q list all the possible zeros of the following equation: 3x^2 - 7 = 0. Hint: there are 8 correct answers.

The graph shows the amount of money the Phillips family spent each month on groceries. When did the smallest month-to-month increase in spending occur? A. September-October B. April-May C. May-June D. August-September

What is the value of 12 (3x + 5x) when x=7?

25 divided by 176?

Our survey asked 1 2 3 4 5 next to each type of music. in how many ways can the survey be answered

Find the area. Use 3.14 for the value of. Round your π answer. when the radius is 20ft?