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2 nd 9 weeks exam review

Prepare for your math exam with comprehensive review notes covering chapters 4, 5, 6, and 8, including practice problems and essential concepts for success. Disclaimer: Copying answers won't ensure success; thorough study is vital.

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2 nd 9 weeks exam review

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  1. 2nd 9 weeks exam review

  2. Disclaimer: • Simply copying down the answers will NOT guarantee you will pass the final exam! • You must go home and repeatedly study the practice problems and process • In addition, study notes, textbooks, power points, class activities, etc.

  3. Disclaimer #2: • Although you may be exempting the final, you are still required to know this material for Milestones so please follow along and ask questions when assistance is needed.

  4. Ch. 4

  5. +9 +9 +5 +5 n = -5 y = 1 (5) (5) d = -35

  6. (4) (4) +16.7 +16.7 48 = w w = 24.97 (7.4) (7.4) e = 51.06

  7. -4 1 -4 1 5 1 5 1 multiply by the reciprocal 5 2 -12 4 ÷ 4 ÷ 4 1 2 -3 2 1 2 a = 2 S = -3

  8. 2 2 2 2 3 5 3 5 + 5 12 5 12 + - - -7 10 6 10 26 12 2 2 5 12 13 6 + - -1 10 d = 21 12 9 12 d = 1 3 4 1

  9. Ch. 5

  10. +7+7 -3 -3 -6-6 -3y = 9 z 9 u 5 = 3 = -2 -3y = 9 -3 -3 u = -10 z = 27 y = -3

  11. GCF = 20 1 4 (20) 2 5 1 6 (6) 1 3 = (20) - (20) 3 X + (6) 2 = (6) X = 8 5x 60 - = 2 x 12 + + 60 + 60 -12 -12 5x = 68 x = -10 5x = 68 5 5 x = 13.6

  12. 7k – 14 = 21 -5m + 10 = -5 +14+ 14 -10- 10 7k = 35 -5m = -15 7k = 35 7 7 -5m = -15 -5 -5 k = 5 m = 3

  13. -1.6t -9.6 8s 6 1.4 – 1.6t – 9.6 = 4.6 6 = 8s – 6 - 20 6 = 8s – 26 -1.6t – 8.2 = 4.6 +26+ 26 +8.2+ 8.2 32 = 8s 8 8 -1.6t = 12.8 -1.6t = 12.8 -1.6 -1.6 4 = s t = -8

  14. ch.5 Inequalities

  15. ÷ neg= flip -64-64 -16 -16 -41-41 14> b g > -14 a < 1.5 b < 14 (-6) X neg= flip (-6) (5.3) (5.3) t > 42 -17-17 r < 31.8 -20 < t t > -20

  16. -8-8 -2a – 16 – 15 < 9 -7d > 21 -7 -7 -2a -31 < 9 d > -3 +31 +31 -2a < 40 -2 -2 a > -20 4g – 12 + 1 < 5 4g – 11 < 5 +11+11 -2/3 p – 8 > 4 4g < 16 +8+8 4 4 -2/3 p > 12 (-3/2) (-3/2) g < 4 p < -18

  17. Ch. 6

  18. $603.75 35 hrs $17.25 1 hr = 1,800 cal 24 oz 75 cal 1 oz = Can’t have a partial envelope 228 env. 60 mins 3.8 1 min 3 1 min = =

  19. 96 96 90 90 320 240 Proportional Proportional Not Proportional

  20. Multiply or Divide the top and bottom of the ratio by ANY # There are multiple correct answers for this section. Possible ans below. 70 90 22 24 70 75 = = =

  21. 77.7 = 3s 255 = 5h 35.7 = 3d 147 = 7x 77.73s 3 3 35.73d 3 3 2555h 5 5 1477x 7 7 = = = = 11.9 = x 25.9 = s 51 = h 21 = x 1394 = 17f 139417f 17 17 = 82 = f

  22. $5.30 11.1 Pesos =---X------ 42.7 Pesos = 226.31 = 11.1x 226.3111.1x 11.1 11.1 = $20.39 = x $3 1 Peso $121.10 x = 121.10 = 3x 121.103x 3 3 = 40.4 Pesos = x

  23. 3.3 in 42.9 x 32.5 = 2.5 = x 2 $1.80 x $28.80 = 57.6 = 1.80x 57.6 1.80x 1.80 1.80 = 32 = x

  24. Ch. 8

  25. 30 15 16 y 6 5 X 13 30 15 34 x y 5 14.4 12 = = = = 240 = 30y 5x = 78 510 = 30x 72 = 12y 24030y 30 = 30 51030x 30 = 30 5x78 5 = 5 7212y 12 12 8 = y 15.6 = x 17 = x 6 = y

  26. Big Triangle Little Triangle 15 x 10 6 = 90 = 10x 9010x 10 10 = 9 = x

  27. 18 x 12 4 = 72 = 12x 6 = x 18ft x 4ft 12ft

  28. x 1.8 20 2.4 = x 2.4x = 36 x = 15 1.8 2.4 20

  29. x 6 28 8 = 168 = 8x 28ft 21 = x x 6 8ft

  30. model Actual model Actual 2.7 32.4 15.5 62 1 12 1 4

  31. model Actual model Actual 128.1 6.1 25.5 1.5 1 21 1 17

  32. 1 in 40 km =---6 in--- x = 240 = x ¼ in 1 ft =---12 in--- x = 48 = x 1 in 64 in =---x--- 540 in = 8.44 = x 45 (x 12) = 540 in

  33. Best Wishes on the final exam

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