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mars1129 [50]
3 years ago
15

I need help you dont have to answer both.

Mathematics
2 answers:
aniked [119]3 years ago
5 0
1. Create a proportion:
12/17=18/x
12x=306
x= $25.50
2. Let Casey’s age be c and his sister’s be s
c=2s-3
c=s+5
2s-3=s+5
s=8
c=13
Casey is 13 years old!
Veseljchak [2.6K]3 years ago
4 0
1.
Weight of potatoes........Cost
12 lb ................................. $17
18 lb ................................. X
by cross multiplication we get
12 X = 17 × 18
12 X = 306
X = 306/12
X = $ 25.5
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I have to repost this because the first time I was not giving correct answers.
SSSSS [86.1K]

Answer and Step-by-step explanation:

We are given: 18x - 2(3x + 1) = 5x - 16

First, lets distribute the -2 to the 3x and 1.

18x - 6x - 2 = 5x - 16

Now, we combine like terms.

12x - 2 = 5x - 16

Next, we add 2 to each side.

12x = 5x -14

Now, we subtract 5x from both sides.

7x = -14

Finally, we divide by 7 on both sides.

x = -2

  Statements:                             Reasons:

  18x - 2(3x + 1) = 5x - 16            Given

  18x - 6x - 2 = 5x - 16                Distributive Property of Equality

  12x - 2 = 5x - 16                       Combine like terms

  12x = 5x -14                              Addition Property of Equality

  7x = -14                                     Subtraction Property of Equality

  x = -2                                        Division Property of Equality

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Step-by-step explanation:

any shape that is duplicated to another area on a graph is a translation

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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