If a triangle has sides of lengths a, b, and c, and a power 2 + b power 2= c power 2, then the triangle is a right triangle. let b=84 units and let c=85 units, as shown.

what is the value for a that completes the set of three numbers that can be the side lengths of a right triangle?

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.

What is 140% of 25? because i need

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square