How many liters each of a 10% acid solution and a 80% acid solution must be used to produce 70 liters of a 65% acid solution?

The height of a triangle is 4 centimeters greater than the base. The area of the triangle is 240 square centimeters. Find the length of the base and the height of the triangle.

A fair six sided die is rolled once. What is the probability of rolling a 5 or 6?

Heath wants 10 L of a solution that is 90% bleach. He will combine pure bleach with a mixture that is 20% bleach. (a) Write a system of equations to model the problem.

Describe how you use algebra tiles to model the equation 4*=20

A 100 foot cable is cut into two pieces. the fist piece is 18 foot longer than the second. how long is each piece?

What's 304:9 with a remainder?

wants to build a rectangular deck that has an area of 165 square feet. The length of the deck will be 15 feet long. What is the width of the deck?

Is 15cm and 7cm a trangle

How to find the quadrant of an angle over 360?

What is 3822 devided by 39