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2 years ago

3x + y = -2 x = 2 - y

Mathematics

1 answer:

andrezito [222]2 years ago

5 0

Answer:

$y = 4 \\ x = - 2$

Step-by-step explanation:

$3(2 - y) + y = - 2 \\ 6 - 2y = - 2 \\ 2y = 8 \\ y = 4 \\ \\ x = 2 - 4 \\ x = - 2$

I hope that uesful for u :)

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sweet-ann [11.9K]

Answer:

Option B

Step-by-step explanation:

Refer to the Attachment for steps.

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3 years ago

Please solve with explanation (high points)

IgorLugansk [536]

So, we know that:

$A=\dfrac{1}{2}ab\\P=a+b+c\\a^2+b^2=c^2$

We also know that $(a+b)^2=a^2+2ab+b^2$ . We will use that fact to find $c$ in terms of $A$ and $P$ .

$A=\dfrac{1}{2}ab\Rightarrow 2ab=4A\\P=a+b+c\Rightarrow a+b=P-c$

Therefore:

$(P-c)^2=c^2+4A\\P^2-2cP+c^2=c^2+4a\\2cP=P^2-4A\\c=\dfrac{P^2-4A}{2P}$

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2 years ago

Help!<br> What would d be?

Oxana [17]

Answer:

d = 17.5499287748 inches or 17.5 inches to 1 decimal place

Step-by-step explanation:

find the diagonal line passing through the middle of the bottom rectangle:

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c = 12.8062484729

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therefore d = 17.5499287748 inches or 17.5 inches to 1 decimal place

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3 years ago

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LekaFEV [45]

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3 years ago

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denis-greek [22]

Answer:

I expect it to be 71

Step-by-step explanation:

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3 years ago

3x + y = -2 x = 2 - y​

3x + y = -2 x = 2 - y