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3 years ago

How do I solve this with Substitution?

Mathematics

1 answer:

TiliK225 [7]3 years ago

8 0

They give you an "x =" statement so you plug in the right side of the equals sign into the first equation wherever x appears. So...

y = 10 - 2(y - 4)
y = 10 - 2y + 8
y = 18 - 2y
y + 2y = 18
3y = 18
y = 6

Now we plug in this result for the y-value into the "x =" statement.

x = 6 - 4
x = 2

Your answer is (2, 6)

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Answer: The answers are in the image attached.

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3 years ago

The value of varies directly with x. when y = 7.5 , x = 5. what is the value of y when x = 80?

AfilCa [17]

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A sprinkler waters in a circular pattern, spraying water out 3.2 meters. How much surface will it water

Zepler [3.9K]

Answer:

The Area of a circle is

πr2=808.64

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Divide both sides by 3.14

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Square root both sides to get radius

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Step-by-step explanation:

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