When 18 boys joined a group of y students, the ratio of boys to girls in the group became 4: 5. write an algebraic expression for the number of girls in terms of y.

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ab=4 and bc=3, find ah, ch and bh.

7(x - 2) = 3(x + 4) solve the following equation. then enter your answer in the space provided using mixed number format.

Fill in the blank 1. a rhombus is a rectangle a) always b) sometimes c) never 2. a square is a quadrilateral a) always b) sometimes c) never 3. a trapezoid is a kite a) always b) sometimes c) never 4. a quadrilateral is a kite a) always b) sometimes c) never 5. a square is a rhombus a) always b) sometimes c) never 6. a parallelogram is a rectangle a) always b) sometimes c) never