3 years ago

What is the answer to -5(6+9k)

Mathematics

1 answer:

anzhelika [568]3 years ago

8 0

Answer: The answer is -30 - 45 k

Step-by-step explanation:

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If sin ⁡x=7/25, and 0 < x < π/2, what is cos⁡(x−3π/2)?

Likurg_2 [28]

Answer:

$Cos(x-\frac{3\pi}{2})=-\frac{7}{25}$

Step-by-step explanation:

Remember that $cos(x-y)=cos(x)cos(y)+sin(x)sin(y)$

Then,

$cos(x-\frac{3\pi}{2})=cos(x)cos(\frac{3\pi}{2})+sin(x)sin(\frac{3\pi}{2})\\$

But $cos(\frac{3\pi}{2})=0$ and $sin(x)=\frac{7}{25}$

Then

$cos(x-\frac{3\pi}{2})=cos(x)*0+\frac{7}{25}*sin(\frac{3\pi}{2})\\=\frac{7}{25}*(-1)=\frac{-7}{25}$

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3 years ago

What is the equation of the line?

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Leno4ka [110]

4 1/2 divided by 2

First, change 4 1/2 to a decimal

4 1/2 = 4.5

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4.5/2 = 2.25

2.25 is your answer

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3 years ago

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nevsk [136]

ANSWER:
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3/4 multiply the top and bottom by 2 so
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