You drove at 55mph for 4.5 hours. which of the following equations will tell you how far you drove? a: d=(55)(4.5) b: 55=r(4.5) c: 4.5=55t d: 4.5=r(55)

Evaluate cos2θ for cosθ = square root of 3/2

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.

Abcd is a square. what is the measure of angle bac