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2 years ago

Help me solve the following 5(2x+7)=

Mathematics

1 answer:

stiv31 [10]2 years ago

3 0

5*2x=10x

5*7=35

the answer is 10x+35

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Answer:

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Step-by-step explanation:

7. the slope is -1/2 and the y intercept is 4

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2 years ago

Susan earned $75 for watching her neighbor's dog for 5 days. How much did Susan make in one day

Damm [24]

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erik [133]

$2.=c.\\\\2\sin4x\cos4x=2\sin(2\cdot4x)=2\sin8x\\\\Used:\\\sin2\alpha=2\sin\alpha\cos\alpha$

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$3.=a.\\\\\dfrac{\sin x-1}{\sin x+1}=\dfrac{\sin x-1}{\sin x+1}\cdot\dfrac{\sin x+1}{\sin x+1}=\dfrac{\sin^2x-1^2}{(\sin x+1)^2}=\dfrac{\sin^2x-1}{(\sin x+1)^2}\\\\=\dfrac{-(1-\sin^2x)}{(\sin x+1)^2}=\dfrac{-\cos^2x}{(\sin x+1)^2}\\\\Used:\\(a-b)(a+b)=a^2-b^2\\\\\sin^2x+\cos^2x=1\to \cos^2x=1-\sin^2x$

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2 years ago

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Anettt [7]

Answer:

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Step-by-step explanation:

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2 years ago