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ValentinkaMS [17]
3 years ago
5

Question is in picture posted but this needs 20 characters so here ya go

Mathematics
1 answer:
Katyanochek1 [597]3 years ago
3 0

Answer:

A

Step-by-step explanation:

The dilation with the center of dilation at the origin and scale factor of 4 has the rule

(x,y)→(4x,4y).

Thus,

  1. A(-1,3)→A'(-4,12)
  2. B(2,1)→B'(8,4)
  3. C(-2,-1)→C'(-8,-4)

A'(-4,12) - option B

B'(8,4) - option C

C'(-8,-4) - option D

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All of these problems make use of the strategy, "look at what you have before you start work."


1. = (4·5)·(-3) = 20·(-3) = -60 . . . . if you know factors of 60, you can do this any way you like. It is convenient to ignore the sign until the final result.

2. = (2.25·4)·23 = 9·23 = 23·10 -23 = 230 -23 = 207 . . . . multiplication by 4 can clear the fraction in 2 1/4, so we choose to do that first. Multiplication by 9 can be done with a subtraction that is often easier than using ×9 facts.

4. = (2·5)·12·(-1) = 10·12·(-1) = (-1)·120 = -120 . . . . multiplying by 10 is about the easiest, so it is convenient to identify the factors of 10 and use them first. Again, it is convenient to ignore the sign until the end.

5. = 0 . . . . when a factor is zero, the product is zero
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3 years ago
A sandwich shop has 40 stores and 80% of the stores are in California. The rest of the stores are in Nevada how many stores are
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32 are in California and 8 are in Nevada.

Step-by-step explanation:

You multiply 40 by 0.80. You then get 32. That's your answer.

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X = 2/3c -1 ...........
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1. 1.4(x−1.6)=1.6(x−1.4)<br><br>solve<br>2. 1.4(x−1.6)=1.6(1.4−x)<br><br>solve
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1.
1.4( x - 1.6) = 1.6(x - 1.4) \\ 1.4x - 2 .24 = 1.6x - 2.24 \\ 0.2x = 0 \\ x =  0
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3 years ago
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Answer:

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Step-by-step explanation:

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1 year ago
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