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liraira [26]
2 years ago
10

4 plates and 3 cups cost 16.70 dollars. 5 plates and 4 cups cost 21.20 dollars. Each plate costs the same amount as the other pl

ates, and each cup costs the same amount as the other cups. What is the cost of 1 plate? What is the cost of 1 cup?
Mathematics
1 answer:
castortr0y [4]2 years ago
4 0

Answer:Plate $3.20 cup $1.30

Step-by-step explanation:

find the difference 4.50 split 4.50 you get 3.20 and 1.30 and then verify

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Answer:

Third option: x = -2 and x = 2

Step-by-step explanation:

Given:

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Here, f(x)=-2x, a=4

∴ -2x=\pm 4\\ -2x=-4\textrm{ or } -2x=4\\ x=\frac{-4}{-2}\textrm{ or }x=\frac{4}{-2}\\ x= 2\textrm{ or }x=-2

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Explanation:

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8 0
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