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4 years ago

Solve using elimination. 9x + 3y = -6 9x + 7y = 10

Mathematics

1 answer:

iogann1982 [59]4 years ago

5 0

Step-by-step explanation:

Given 

9x + 3y = - 6..........equation 1

9x + 7y = 10 ..........equation 2

Now subtracting both equations we get

9x + 3y = -6

9x + 7y = 10

- - = -

-4y = -16

Therefore y = 4

Now putting y = 4 in equation 1

9 * 4 + 3y = -6

36 + 3y = -6

3y = -6- 36

3y = -42

Therefore y = -14

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Answer:

See the explanation.

Step-by-step explanation:

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As she wants to have 8 inches of height, substitute it in the given equation:

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3 years ago

What is the area of a sector of a circle with a radius of 9 centimeters and formed by a central angle that measures 120°?

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Answer:

Step-by-step explanation:

If this was an entire circle, the area could be found by using

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3 years ago

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Alex787 [66]

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3 years ago

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sesenic [268]

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2 years ago

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