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Elis [28]
3 years ago
10

Is y=9x-5 proportional?

Mathematics
1 answer:
adoni [48]3 years ago
8 0
Yes it is proportional
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8

Step-by-step explanation:

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Jean sold cupcakes and cookies yesterday. Each cupcake sold for $2.25 and each cookie sold for $0.50. At the end of the day, Jea
slega [8]

Answer:number of cupcakes sold is 13

Number of cookies sold is 27

Step-by-step explanation:

Let x represent the number of cupcakes that Jane sold.

Let y represent the number of cookies that Jane sold.

Each cupcake sold for $2.25 and each cookie sold for $0.50. At the end of the day, Jean had sold $42.75 worth of cookies and cupcakes.

This means that

2.25x + 0.5y = 42.75 - - - - - - - - - -1

she sold 40 cupcakes and cookies combined, it means that

x + y = 40

Substituting x = 40 - y into equation 1, it becomes

2.25(40 - y) + 0.5y = 42.75

90 - 2.25y + 0.5y = 42.75

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y = - 47.35/-1.75

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x = 40-27 = 13

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4 0
3 years ago
Which one is an irrational number?
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Answer:

The irrational number is 4.37124...

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If f(x) = 3x^0 - 2x^-1 +4 then f(2)=
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Answer:

try this link

Step-by-step explanation:

https://www3.nd.edu › WorkPDF

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MATH 10550, EXAM 1 SOLUTIONS 1. If f(2) = 5, f(3) = 2, f(4) = 5, g(2 ...

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Answer:

Angle B: 26 degrees

Angle C: 26 degrees

Angle BSD: 97 degrees

Angle CSE: 97 degrees

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Step-by-step explanation:

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3 years ago
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