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lys-0071 [83]
3 years ago
9

Solve for x. x 18 = 10 A) 8 B) 28 C) 162 D) 180

Mathematics
2 answers:
Novay_Z [31]3 years ago
8 0

Answer:

D) 180

Step-by-step explanation:

Komok [63]3 years ago
5 0

Answer:

B) 28?

Step-by-step explanation:

Im assuming its x+18=10.

Therefore 18+10 so x=28

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Answer:

One rose bush = $3

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Step-by-step explanation:

We can set up a system of equations to solve for this. Let cost of 1 rose bush be r and cost of 1 ornamental grass be g. Thus we can form 2 equations:

14r+7g=70\\5r+14g=71

We can multiply the first equation by -2 so that we can eliminate g. Thus, we have:

(*-2)14r+7g=70\\5r+14g=71\\-------\\-28r-14g=-140\\5r+14g=71\\--------\\-23r=-69\\r=\frac{-69}{-23}=3

Thus, 1 rose bush is $3. Now plugging in r = 3 into the first original equation, we can solve for g:

14r+7g=70\\14(3)+7g=70\\42+7g=70\\7g=70-42\\7g=28\\g=\frac{28}{7}=4

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3 years ago
Explain why it does not matter what letter or symbol is used to find an unknown number
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false

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