3 years ago

What is the value of x?

Mathematics

1 answer:

Paraphin [41]3 years ago

6 0

X equals 4. (this is supposed to be 20 characters long so i’m just typing randomly)

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A . 5 - 4/8 B. -1/8 - 1/4 C. -1/4 - (-1/8) or D. -1/6 + (-5/24)

xenn [34]

Answer:

letter ( D ).

1/6 + ( - 5 / 2 4 )

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3 years ago

The volume of a cylinder is 1,0297 cubic

RUDIKE [14]

$\textit{volume of a cylinder}\\\\ V=\pi r^2 h~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ V=10297\\ h=21 \end{cases}\implies 10297=\pi r^2(21)\implies \cfrac{10297}{21\pi }=r^2 \\\\\\ \cfrac{1471}{3\pi }=r^2\implies \sqrt{\cfrac{1471}{3\pi }}=r\implies 12\approx r$

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2 years ago

Those are two regular twelve-sided shapes, also known as dodecagons. How many degrees does the angle β have?

worty [1.4K]

Thank you for posting your question here at brainly. It 35 degrees if there are are two regular twelve-sided shapes, also known as dodecagons. Dodecagon is a figure with 12 sides. I hope the answer helps. Please don't hesitate to post if you have other questions.

8 0

4 years ago

2 (k - 5) + 3k = k + 6

PolarNik [594]

Answer:

k=4

Step-by-step explanation:

First, distribute the 2 on the left side

2 (k - 5) + 3k = k + 6

2*k +2*-5 +3k=k+6

2k-10+3k=k+6

Combine like terms on the left side

5k-10=k+6

Add 10 on both sides

5k=k+16

Subtract k on both sides

4k=16

Divide by 4 on both sides

k=4

Hope this helps! :)

3 0

4 years ago

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Simplify <img src="https://tex.z-dn.net/?f=sin%20x%5E%7B2%7D%20%28x%29cos%20x%5E%7B2%7D%20%28x%29-cos%20x%5E%7B2%7D%20%28x%29" i

zhenek [66]

$sin^2(x)cos^2(x)-cos^2(x)\\\\=sin^2(x)\cdot cos^2(x)-1\cdot cos^2(x)\\\\=cos^2(x)\cdot(sin^2(x)-1)\\\\=cos^2(x)\cdot[-(1-sin^2(x)]^{(*)}\\\\=cos^2(x)\cdot[-cos^2(x)]^{(*)}\\\\\boxed{=-cos^4(x)}\\------------------\\(*)\ used:\\\\sin^2(x)+cos^2(x)=1\to cos^2(x)=1-sin^2(x)$

4 0

3 years ago

Read 2 more answers