Fifty liters of a 40% acid solution is obtained by mixing a 25% solution with a 50% solution. (a) write a system of equations in which one equation represents the amount of final mixture required and the other represents the percent of acid in the final mixture. let x and y represent the amounts of the 25% and 50% solutions, respectively.

Evaluate the following expression 1/3^2

Janice determined there were 10 possible outcomes when tossing two coins and spinning a spinner numbered 1 through 6. what is the correct number? what might have been janice's error?

Sara has been reading about different types of financial grants, including federal pell grants, academic competitiveness grants, smart grants, and teach grants. which statement about these grants is true? filling out a fafsa will not her apply for these grants. she will not have to pay back any funds she receives from these grants. these grants only go to students with less than a 3.0 gpa. she will have to pay back all the funds she receives from these grants.