The ages of three brothers add up to 38 years. the oldest brother is 5 years older than the youngest brother. five years ago, the oldest was twice the age of the youngest. write and solve a system of three equations in three variables to determine the ages of the brothers.

Marie drew the triangle shown. she wants to draw a second triangle that is different from this one. use the drop-down menus below to complete the statements about the second triangle.

What is the missing step in this proof ?

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.