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Using distribution to find area

Using distribution to find area How can I find the area of this triangle? How can I find the area of this rectangle? A = ½ [ (5x + 2)8 ] b = 6x -3 h = 4 A = ½ [ (5x + 2)8 ] A = (6x-3)4 A = ½ (40x + 16) a = (6x-3)4 A = 20x + 8 a = 24x - 12. 8. 4. 6x - 3. 5x + 2.

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Using distribution to find area

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  1. Using distribution to find area How can I find the area of this triangle? How can I find the area of this rectangle? A = ½ [ (5x + 2)8 ] b = 6x -3 h = 4 A = ½ [ (5x + 2)8 ] A = (6x-3)4 A = ½ (40x + 16) a = (6x-3)4 A = 20x + 8 a = 24x - 12 8 4 6x - 3 5x + 2 A = ½ (b × h) A = b × h

  2. Let’s do this one together! Write an expression for the area of this triangle Find the area for this rectangle when x = 3 3x + 4 5

  3. Try this one on your own 1) Write and expression for the area of this rectangle. 2) If m = 4, what is the area of this rectangle? 4 6m - 8

  4. CHALLENGE! 6x 5x 4y - 5 8x + 8 5y + 2 Write an expression for the PERIMETER of this rectangle Write an expression for perimeter of this triangle:

  5. The perimeter is 120cm. Write an equation to find the side length x, then solve. 40in x 15in Can you find the area of the triangle above? 2. A teddy bear was advertised at a discounted price of $45. The bear was marked with a tag indicating $15 off the original price. Write and solve an equation to find the original price of the teddy bear. 3. Your school of 65 students is going on a field trip to the zoo. It costs $18 per train ticket and $29 per zoo admission. How much money will it cost for you all to go?

  6. A baseball player’s batting average is defined as the number of hits divided by the number of times at bat. If a baseball player batted 600 times and had a batting average of 0.75, how many hits did the batter have? You use an ATM machine to deposit a check for $145.67 into your checking account. Your receipt from the ATM shows a balance of $561.13 after the deposit. What was the balance of your account before the deposit? Explain why the fraction ½ is part of the formula for the area of a triangle.

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