Find the maximum value of the function z=2x+2y subject to the following constraints 7x+8y <_88 2x+y <_20 X >_ 0 Y >_ 0 (<_ AND >_ ARE GREATER THAN OR EQUAL TOO AND LESS THAN OR EQUAL TOO!!)

Volume of a cylinder with a radius of 13 in and height of 30 in

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.

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.