Determine whether the triangle with given sides is right triangle or not

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

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.

X+ y = 5 ; x - y =3 solve using linear combination