Nainoa has several coins, all nickels and quarters, in his piggy bank. he has a total of $15.65. if nainoa has 13 more nickels than quarters, how many quarters does he have

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.

Solve the formula ax+ by = c for x.

Find the solution to this system 2,1 1,-2 1,2 -1,2