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Matrices and Formulas V = lwh

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Part I: Matrices A matrix looks like a table; it has numbers listed in rows and in columns.

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What are the DIMENSIONS of this matrix? row column Answer: 3 x 2

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Add these two matrices:

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Answer:

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The matrix below shows how many shirts were sold in a store: Mon Tues Wed Small Medium Large How many small shirts were sold? Answer: 132 How many shirts were sold on Tuesday? Answer: 465

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The matrix below shows food sold at a carnival: Day 1 Day 2 Candy Apples Cotton Candy Soda Chips How much more cotton candy was sold on the first day than on the second day? Answer: 101

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The matrix below shows the supplies needed for building two different models of trucks: Wheels Plastic Sheets Paint Cans Glue bottles Dump Truck Fire Truck 4 10 1 2 8 22 2 3 How many sheets of plastic are needed to build 17 fire trucks? Answer: 374

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Parts II: Formulas A formula tells what information is needed and what math operations to use to determine an answer. d = rt d = distance r = rate t = time h = -16t 2 + 40t + 8 h = height t = time

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The formula below is used to determine the area of a triangle. What is the area of this triangle? 4 cm 3 cm ANSWER: A =(.5)(3)(4) = 6 cm 2 (b is the length of the base and h is the height of the triangle)

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The formula below can be used to find actual air temperature: (t = temperature and w = wind-chill temperature) What is the actual air temperature if the wind-chill temperature if -12 ? Answer: 18

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The formula below is used to determine the cost of a car rental: (C = total cost and m = number of miles driven) If the cost is $ 52, how many miles were driven? Answer: 112 miles

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MATRICES AND FORMULAS The End

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DIVIDING INTEGERS 1. IF THE SIGNS ARE THE SAME THE ANSWER IS POSITIVE 2. IF THE SIGNS ARE DIFFERENT THE ANSWER IS NEGATIVE.

DIVIDING INTEGERS 1. IF THE SIGNS ARE THE SAME THE ANSWER IS POSITIVE 2. IF THE SIGNS ARE DIFFERENT THE ANSWER IS NEGATIVE.

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