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3 years ago

6

Nvm i have a new question i need to know if the answer is correct

1 answer:

insens350 [35]3 years ago

5 0

<em>multiply the numbers.</em>

4 x 6 + y = 20

<em>move constant (24) to the right side and change its sign.</em>

24 + y = 20

<em>calculate the difference and you get the answer.</em>

y = 20 - 24

y = -4

So the value of y is -4.

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4 years ago

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3 years ago

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Elena-2011 [213]

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$x$ is in quadrant II, so $\sin x>0$ .

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$\cos\theta=\sqrt{1-\left(\dfrac45\right)^2}=\dfrac35$

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$\sin(\alpha\pm\beta)=\sin\alpha\cos\beta\pm\cos\alpha\sin\beta$

$\cos(\alpha\pm\beta)=\cos\alpha\cos\beta\mp\sin\alpha\sin\beta$

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as well as the definition of tangent:

$\tan\alpha=\dfrac{\sin\alpha}{\cos\alpha}$

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2. $\cos(\theta-x)=\cos\theta\cos x+\sin\theta\sin x=\dfrac{33}{65}$

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$\cos^2\dfrac\alpha2=\dfrac{1+\cos\alpha}2$

$\sin^2\dfrac\alpha2=\dfrac{1-\cos\alpha}2$

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4 years ago

X/2+3>9 what is the value of x and how do you work the problem

const2013 [10]

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4 years ago