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Kipish [7]
3 years ago
9

Y= -5x +10 y= -2x-2 solve by substituions

Mathematics
1 answer:
Veronika [31]3 years ago
4 0

Answer:

x = 4, y = -10

Step-by-step explanation:

if both expressions equal 'y' then you can solve by setting them equal to each other:

-5x + 10 = -2x - 2

-3x + 10 = -2

-3x = -12

x = 4

find 'y':

y = -5(4)+10

y = -20 + 10

y = -10

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Answer:

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Step-by-step explanation:

We know the formula for a rectangular prism is length × width × height

We also know all the sides so we can rewrite the formula replacing variables.

The length is 8, the width is 2\frac{1}{2} and the height is 2\frac{1}{2}

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Multiply which ever way is easy for you. I am just multiplying from left to right.

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