3 years ago

I need help quick plz

Mathematics

1 answer:

Semenov [28]3 years ago

8 0

Is there a word bank so I could help out ?because that would make it better

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You can use a calculator for this question.

DochEvi [55]

1) Width = 7.35/2.1 = 3.5 m
<span>
2) C = 7pi = 21.98 m </span>

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Pick the Quadrant that you would plot (4,2)

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Quadrant 1 Reason being all the positive are housed in quadrant 1

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webassign If a snowball melts so that its surface area decreases at a rate of 6 cm2/min, find the rate at which the diameter dec

drek231 [11]

Answer:

The answer is $\frac{3}{10\pi } cm/min$

Step-by-step explanation:

Assuming the snowball is a perfect sphere, then if A denotes the surface area and D the diameter then:

$A=4\pi r^{2} = 4\pi (\frac{D}{2} )^{2} =\pi D^{2}$

Differentiating wrt r we have:

$\frac{dA}{dD} =2\pi D$

We are told that $\frac{dA}{dt}= -6$ and we want to find $\frac{dD}{dt}$

By the chain rule we have:

$\frac{dA}{dD}=\frac{dA}{dt}.\frac{dt}{dD}=\frac{\frac{dA}{dt} }{\frac{dD}{dt} }$

∴ $2\pi D=-\frac{6}{\frac{dD}{dt} }$

∴ $\frac{dD}{dt}=-\frac{6}{2\pi D}$

When D=10 then

$\frac{dD}{dt} =-\frac{6}{10*2\pi } =-\frac{3}{10\pi }$

The sign (-) shows that the D is decreasing.

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Dos personas halan de un cuerpo de 20Kg con fuerzas de 100N y 200N. calcular la aceleración de la masa si: A)las fuerzas se ejer

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