Estimate the sum or difference. Use the benchmarks 0, one-half, and 1. start fraction 2 over 15 end fraction + Start Fraction 13 over 30 End Fraction
A. 0
B. 1/2
C. 1

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.

2x minus y equals 6, x plus y equals negative 3

Are the corresponding angles congruent? explain why or why not.