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3 years ago

Derivative of cos(2t) is?

1 answer:

6 0

The derivative of the function cos(2t) can be determined by following the trigonometric rule of differentiation. In this case, the derivative of cos t is -sin t while that of 2t is t. The total derivative and the answer to this problem asking for the d<span>erivative of cos(2t) </span><span>is -2 sin 2t.</span>

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yanalaym [24]

Left over is 456 minus total of A+B+C
456-334=122
C d are equal so 122/2=61

4 0

3 years ago

Read 2 more answers

A cement walkway of uniform width has been built around an in-ground rectangular pool. the area of the walkway is 1344 square fe

Elza [17]

Answer:

6 feet.

Step-by-step explanation:

Dimensions of the Pool =80 feet long by 20 feet wide

Area of the walkway =1344 square feet.

If the width of the walkway=w

Length of the Larger Rectangle =80+2w
Width of the Larger Rectangle =20+2w

Area of the Walkway =Area of the Larger Rectangle - Area of the Pool

$1344=(80+2w)(20+2w)-(80*20)\\1344=80*20+160w+40w+4w^2-80*20\\4w^2+200w=1344\\4w^2+200w-1344=0\\We factorize\\4(w^2+50w-336)=0\\4(w^2-6w+56w-336)=0\\w(w-6)+56(w-6)=0\\(w-6)(w+56)=0\\w-6=0$ or $ w+56=0\\w=6$ ft or $ w=-56$ \\Therefore, the width of the walkway , w=6 feet.$

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3 years ago

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Scilla [17]

Answer: The answer is D

Step-by-step explanation:

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3 years ago

What is 4(1-2b)+7b-10

shutvik [7]

Answer:

-6-b

Step-by-step explanation:

4(1-2b)+7b-10

Multiply what's in parantheses

4(1)=4

4(-2b)=-8b

4-8b+7b-10

Combine like terms

4-10 -8b+7b

-6-b

Hope this helps :)

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horsena [70]

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Step-by-step explanation:

This shouldn't be in mathematics?

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3 years ago