0.82 equals what percent?

Mathematics

1 answer:

daser333 [38]3 years ago

7 0

82 percent of one hundred

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What is the derivative of f(x)= 3cos^2 (x)

Igoryamba

$\large\begin{array}{l} \textsf{Finding the derivative of}\\\\ \mathsf{f(x)=3\,cos^2\,x} \end{array}$

$\large\begin{array}{l} \textsf{You can differentiate it using the chain rule}\\\\ \mathsf{f'(x)=(3\,cos^2\,x)'}\\\\ \mathsf{f'(x)=3\,(cos^2\,x)'}\\\\ \mathsf{f'(x)=3\cdot 2\,(cos\,x)^{2-1}\cdot (cos\,x)'}\\\\ \mathsf{f'(x)=6\,(cos\,x)^1\cdot (-sin\,x)}\\\\ \boxed{\begin{array}{c}\mathsf{f'(x)=-6\,cos\,x\,sin\,x} \end{array}}\qquad\checkmark \end{array}$

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$\large\textsf{I hope it helps.}$

Tags: derivative trig function cosine cos power chain rule differential calculus

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Answer:

See explanation

Step-by-step explanation:

OK. Alvi is incorrect because he didn't add the measures of all 3 angles of the triangle, whereas Brian did. So, Brian is correct and Alvi needs to work on that kind of problem.

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Shawntee has 21 coins all of them nickel and dimes that are worth $1.70. Write a system of equations and splve

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N+d=21
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so

multiply first equation by -5 and add to other one

-5n-5d=-105
5n+10d=170 +
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divide both sides by 5
d=13

sub back

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n+13=21
minus 13 both sides
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Answer:

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