Would It be possible to live on the moon with the right technology?

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.

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)