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Lesson 6-1

I can write ratios. I can use properties of proportions. Lesson 6-1. Alice. quotient. a : b. with the same units. Write with : or as a fraction, a/b. females : males . elective : non-elective. 2 :. 3. a : b : c. Ex: ratio of freshmen to sophomores to juniors.

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Lesson 6-1

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  1. I can write ratios • I can use properties of proportions Lesson 6-1

  2. Alice

  3. quotient a : b with the same units Write with : or as a fraction, a/b

  4. females : males

  5. elective : non-elective 2 : 3

  6. a : b : c Ex: ratio of freshmen to sophomores to juniors Cannot be written as a fraction

  7. 7 84 x 240 5x + 7x + 8x = 5 x 20x = 240 60 96 8 x x = 12

  8. 24° 2 x 2x + 10x + 3x = 180 3 x 15x = 180 x 10 36° 120° x = 12

  9. 7x L W 3x 3x 140 20x = x = 7 7x L = 49

  10. fractions equal diagonals

  11. 72 8y = 163.8 6x = y = 9 x = 27.3

  12. 4(2x + 3) = 40 4(x + 1) 3(x – 1) = 8x + 12 = 40 4x + 4 3x – 3 = x = -7 x = 3.5

  13. CD’s cost 3x = 3 2 89.7 = 44.85 x x = 29.9 $29.90

  14. length width 40x = 40 16 144 = 9 x x = 3.6 3.6 inches

  15. miles inches 4 x x = 14 = 1 3.5 14 miles

  16. gal miles 5 x x = 14.58333 = 120 350 14.6 gallons

  17. ? 5 wide 3.5 18 tall 5 x = 3.5 18 x = 25.7143 25.7 inches

  18. 3 : 1 : 2 oats W : R : O wheat 120 2 = x 3 x = 180

  19. ASSIGNMENT: 6-1 worksheet, do odds only

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