Report

Applications of Linear Systems Objective: To choose the best method for solving a system of linear equations. How do we solve? How do we solve? T 9 1.15h S 7 .75h Problem 1 Problem 1 Got it? Got it? C 864 .80x I 2x 2 x 864 .80x 1.2 x 864 x 720 Problem 2 Problem 2 Got it? Got it? x 20% solution y 12% solution x y 15 .20x .12 y .18(15) Got it? x 20% solution y 12% solution x y 15 .20x .12 y .18(15) x 15 y .20x .12 y .18(15) .20(15 y ) .12 y 2.7 3 .20 y .12 y 2.7 .08 y .3 y 3.75, x 11.25 Air Travel Problem 3 Problem 3 Got it? • You row upstream at a rate of 2mi/h. You travel the same distance downstream at a rate of 5 mi/h. What would be your rowing speed in still water? What is the speed of the current? Got it? • You row upstream at a rate of 2mi/h. You travel the same distance downstream at a rate of 5 mi/h. What would be your rowing speed in still water? What is the speed of the current? Row current speed rw5 rw2 2r 7 r 3.5, c 1.5 Homework • Pages 386-387 • 7-15 odd