Chapter 3 Unit Question What are the uses of division in Algebra?

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Presentation transcript:

Chapter 3 Unit Question What are the uses of division in Algebra?

Open Learning Logs Date on Left…Section 3 – 8 on right

Warm-Up Section )Are the fractions and equal? Explain your answer. 2)Three apples cost $0.60. How much will a dozen apples cost?

Section 8 What are proportions? How do we use them to solve problems?

Homework Clicky

Means – Extremes Property: For all Real numbers, a, b, c, d with b, d ≠ 0 Ifthen Means-Extremes Property is just fancy schmancy words for_________________ Cross Multiplying

Solve using Means-Extremes (Cross Multiplying)

Remember?

Darla drives miles on 9 gallons of gas. If CONDITIONS REMAIN THE SAME, how far could Darla drive with 14 gallons of gas? If we let the 1 st sentence = 2 nd sentence and let x = miles to be driven on 14 gallons of gas Darla can drive 441 miles on 14 gallons of gas.

Scale Drawings… Drawing of a locomotive… Scale:.125 inch = 1 foot If the drawing is 6.75 inches long, what is the actual size of the train? SCALE = DRAWING The train is 54 feet long

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Homework Quiz Prep 3-5 to 3-8