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Assignment:

1-->Set 50 (evens) - Due Wednesday (1/11)
2-->Test #7 - Thursday (1/19)
3-->Test #6 signed??




                                            1
Lesson 49 Warm-Up:

1)   Solve:    4x2 = 64   (all solutions)
                                                    2 in

2)   Expand:     -5(4r - 2d - 1)

3)   Find the perimeter:                    10 in

                                                                   4 in


                                                           10 in

4)   Simplify:     3/8 - 1/2 x 2/3 x 3/4

5)   33   3 + 3 - 3(3)




                                                                          2
Lesson 49:

FYI...We can solve rate problems 2 ways:
    --with proportions (McDonald's arches)
    --by multiplying by the unit rate




                                             3
Examples (Lesson 49):
Solve the following by using a ratio box/proportion.

A) If 5 pounds of seedless grapes cost $3.80, how much would 9
pounds cost?




                                                                 4
B) If 8 cows eat 200 pounds of hay a day, how many pounds of
hay would 20 cows eat in a day?




                                                               5
C) Don can type 135 words in 3 minutes. At that rate, how many
minutes would it take him to type 450 words?




                                                                 6
D) Find the price per pound of grapes in "a", the pounds of hay per
cow in "b", and the words per minute in "c".




                                                                      7
E) Solve examples "a" & "b" again using a rate instead of a
proportion.




                                                              8

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8th PreAlg - L49--Jan9

  • 1. Assignment: 1-->Set 50 (evens) - Due Wednesday (1/11) 2-->Test #7 - Thursday (1/19) 3-->Test #6 signed?? 1
  • 2. Lesson 49 Warm-Up: 1) Solve: 4x2 = 64 (all solutions) 2 in 2) Expand: -5(4r - 2d - 1) 3) Find the perimeter: 10 in 4 in 10 in 4) Simplify: 3/8 - 1/2 x 2/3 x 3/4 5) 33 3 + 3 - 3(3) 2
  • 3. Lesson 49: FYI...We can solve rate problems 2 ways: --with proportions (McDonald's arches) --by multiplying by the unit rate 3
  • 4. Examples (Lesson 49): Solve the following by using a ratio box/proportion. A) If 5 pounds of seedless grapes cost $3.80, how much would 9 pounds cost? 4
  • 5. B) If 8 cows eat 200 pounds of hay a day, how many pounds of hay would 20 cows eat in a day? 5
  • 6. C) Don can type 135 words in 3 minutes. At that rate, how many minutes would it take him to type 450 words? 6
  • 7. D) Find the price per pound of grapes in "a", the pounds of hay per cow in "b", and the words per minute in "c". 7
  • 8. E) Solve examples "a" & "b" again using a rate instead of a proportion. 8