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LuckyWell [14K]
3 years ago
5

Solve using elimination. 5x - 4y = -10 5x - 5y = -5

Mathematics
2 answers:
Lapatulllka [165]3 years ago
7 0

Answer:

x = -6

y = -5

Step-by-step explanation:

5x - 4y = -10

5x - 5y = -5

__________--

y = -5

5x - 4y = -10

5x - 4(-5) = -10

5x + 20 = -10

5x = -10 - 20

5x = -30

x = -30/5

x = -6

jolli1 [7]3 years ago
4 0

Answer:

(x,y) = (-6,-5)

Step-by-step explanation:

If you need the explanation let me know.

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Answer:

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Rounded to the nearest tenth: 10.2

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Step-by-step explanation:

To find the area of a square, we multiply the side length by itself, or in other words, SQUARE the side length!

A=s^2

We are given the area, so plugging that into our equation looks like this:

105=s^2

To eliminate the exponent, take the square root of both sides of the equation!

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From here, there are a few paths to take, depending on what your teacher is looking for. I will evaluate the approximate of the square root by finding the nearest perfect squares.

The nearest perfect square less than √105 is √100, and the nearest perfect square greater than √105 is √121.

105 is closer to 100 than to 121, so √105 is closer to √100.

√100 is equal to 10, so the √105 is approximately 10 inches!

Using a calculator to check:

\sqrt{105}=10.247 inches

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Step-by-step explanation:

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