One antifreeze solution is 39% alcohol and another is 26% alcohol. How much of each mixture should be added to make 65 L of a solution that is 33% alcohol?

10 ! in a race, nick is 50 feet in front of jay after ten seconds. how fast can nick run, if jay can run 20 feet per second?

Write the expression 7x^3-28xy^2 as the product of 3 factors

Due to financial difficulties the owner of 4 skateboard stores is going to close 2 of his stores. based on the money earned at each store, which two stores should remain open?