Jose is trying to decide how many friends he can invite to his roller skating party. skate rentals cost $2.50 per person, including jose, and he knows that 3 adult chaperones plan to skate. how many friends can jose invite if he wants to spend only $50.00 total on skate rentals? jose can .

7x+8y=-18, 4x-9y=-3 solve the system of equations

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.