Sean is 20 and his brother is 12. how many years ago was sean three times as old as his brother

Find the real number root. sqrt-2.56

To increase an amount by 85% what single multiplier would you use

32gal/min equals how many qt/h

Which value of y from the set {4, 5, 6, 7} makes this equation true? 2y + 5y = 49

Amy is making 3 batches of cookie which uses 1/4 teaspoons of sugar per batch. How many teaspoons will she use?

Prove that acceleration is perpendicular to velocity

If two angles are complementary. One angle measures 22 degrees. And the other angle measures 2x degrees, what is the value of x?

Does 14x + 1-12x=2x+1 have many solutions, one solution, or no solution

A manufacturer plans on building a better mousetrap. There is a 60% chance the mouse trap will produce a profit of $200,000 for the company, a 20% chance of a $100,000 profit, and a 20% chance the company will lose $200,000.

6 (n+3) use distributive property.