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3 years ago

7

Find the value of x when y=13. Y=-3x+4

1 answer:

Murrr4er [49]3 years ago

8 0

Answer: x= -3

Explanation:
If y is equivalent to 13 then our equation would be

13=-3(x)+4

To receive what x is then you’d have to switch it around and find it as

3x+13=4

And 3x=-9

If you divide both sides by 3 then

x=-3

That’s the best I can do to explain it

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Step-by-step explanation:

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4 years ago

The side of a triangles are 8cm,12cm,17cm.find its perimeter and its are by using herons formula

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see explanation

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3 years ago

Use the power reducing formula to rewrite the expression in therms of first powers of hte cosines of ultiple angles 3cos^4x.

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The particular identity you want to use is

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Then

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$3\cos^4x=\dfrac34\left(1+2\cos(2x)+\cos^2(2x)\right)$

Use the identity again to write

$\cos^2(2x)=\dfrac{1+\cos(4x)}2$

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$3\cos^4x=\dfrac34\left(1+2\cos(2x)+\dfrac{1+\cos(4x)}2\right)$

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3 years ago