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vladimir2022 [97]
4 years ago
10

Each item in a vending machine costs

Mathematics
1 answer:
gizmo_the_mogwai [7]4 years ago
6 0

Answer:

1 quarter, 2 dimes

1 quarter, 1 dime, 3 nickels

4 dimes, 1 nickel

3 dimes, 3 nickels

9 nickels

Step-by-step explanation:

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Elis [28]

3y\geqx-9\qquad|:3\\\\y\geq\dfrac{1}{3}x-3\\\\3x+y > -3\qquad|-3x\\\\y > -3x-3

\left\{\begin{array}{ccc}y\geq\dfrac{1}{3}x-3\\\\y > -3x-3\end{array}\right


y=\dfrac{1}{3}x-3\\\\for\ x=0\to y=\dfrac{1}{3}(0)-3=-3\to(0,\ -3)\\\\for\ x=3\to y=\dfrac{1}{3}(3)-3=1-3=-2\to(3,\ -2)\\\\y=-3x-3\\\\for\ x=0\to y=-3(0)-3=-3\to(0,\ -3)\\\\for\ x=-1\to y=-3(-1)-3=3-3=0\to(-1,\ 0)

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solid line. we shade above the line

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the dotted line. shadow above the line

Answer in the attachment (the first graph).

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3 years ago
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The answer to the problem is 12-6x
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Step-by-step explanation:

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