7.2 Quadratic Story Problems

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Presentation transcript:

7.2 Quadratic Story Problems Brett Solberg AHS ‘11-’12

Warm-up Get out your completed homework for a stamp. We will review a few problems to begin class. Get out your notes and a pencil.

Today’s Agenda HW Check Test Review 8.2 Story Problems and Quadratics Announcement EC Complete the Square WS

Chapter 7 Test People who still need to take the test 2nd 4th 8th Average 21.5/36 = 59.7% High 36 4th Average 23.52/36 = 65.3% High 37 8th Average 17.75/36 = 49% High 33 People who still need to take the test Brandee, Max, Anna, Jonah, Josh, & Chad

Problem Solving Guidelines 1) Understand the problem What is the problem asking? What do we know? 2) Develop and carry out a plan. Draw a picture, label Use formulas 3) Find the answer and check. Solve

Formulas Area Pythagorean Theorem Distance Rectangle: length x width a2 + b2 = c2 right triangle, c hypotenuse, a & b legs Distance d = rt

Dimensions of A Dock Width is 7 meters less than the length Area = 60 m2

Dimensions of Farm Plot Area = 200 yards2 Perimeter = 60 yards

Ladder and the Wall Ladder is 2 feet longer than height of wall. Distance from base to wall = height

Runners Speed Runner A is 4 km/h faster than runner B After 2 hours, they are 40 km apart

Picture Frame Width 14 x 20 Frame Area of rectangle inside frame is 160 cm2

Homework 8.2 p 349 #1 – 19