Hannah and Sam are working on a coding project together. Hannah has created (7x +78) lines of
code, and Sam has written (6x + 73) lines.
Hannah has written 142 more lines of code than
Sam.
How many lines of code did Sam
write?

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

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.

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11