Determine which of these illustrates two quantities that combine to make 0.

a)bill lost ten pounds and then gained ten pounds. b)a business's profit if its income is less than its expenses. c)a business's loss its income is expenses are more than its income. d)it is ten degrees below zero and then 

Find the value of x that will make l ll m

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.

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup