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8th pre alg -l50

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8th pre alg -l50

  1. 1. Lesson 50.notebook December 05, 2013 Assignment: 1-->Set 50 (evens) - Due Tomorrow [12/6] ***Test #6 signed for Extra Credit??
  2. 2. Lesson 50.notebook December 05, 2013 Lesson 50 Warm-Up: 2) x = 1.2 3 Simplify: 5(x + 3) - 2(x + 4) 3) Find 1/2mv2, when m = 8 and v = 2 1) Solve: 4) In a bag of 60 marbles, 18 are green. What is the probability of NOT drawing a green one? 5) Annie has answered 21 of the 25 questions. What percent of the questions has she answered?
  3. 3. Lesson 50.notebook Lesson 50: FYI - REMEMBER...to solve equations we must: "ISOLATE THE VARIABLE" So...sometimes we must do multi-step equations.... HOWEVER, we must "undo" the adding/subtracting... BEFORE we "undo" the multiplying/dividing. (opposite of Order of Operations) December 05, 2013
  4. 4. Lesson 50.notebook December 05, 2013 Examples (Lesson 50): Solve--show all steps. Check your answer. A) 3x + 5 = 50 check: B) 4x - 12 = 60 check:
  5. 5. Lesson 50.notebook December 05, 2013 C) 30n + 22 = 292 check: D) x + 4 = 13 5 check:
  6. 6. Lesson 50.notebook December 05, 2013 E) -2x + 17 = 3 check: F) 3m - 1.5 = 4.2 check:
  7. 7. Lesson 50.notebook December 05, 2013 G) 4x + 10 + x = 100 check: H) 7x - 12 - x = 24 check:

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