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3 years ago

Help I need this now

Mathematics

1 answer:

eimsori [14]3 years ago

3 0

Answer:

There is no question showing up so I dont know how to help u

Step-by-step explanation:

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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.

3 0

3 years ago

Question 3 (1 point)

Eva8 [605]

Fixed expense because it is a monthly payment

6 0

2 years ago

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What is √ 48 in simplified radical form? 2 √ 12 2 12 4 √ 6 4 6 4 √ 3 4 3 12 √ 2

Vinvika [58]

$▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪$

Let's solve ~

$\sqrt{48}$

$\sqrt{2 \times 2 \times 2 \times 2 \times 3}$

$(2 \times 2) \sqrt{3}$

$4 \sqrt{3}$

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2 years ago

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Find the edge length of the cube. Write the answer as a fraction in simplest form. volume is 1/27 ft. cubed

Slav-nsk [51]

The volume of a cube is the edge length cubed (S^3)

To find the edge length when the volume is known find the cubic root of the volume.

Edge = ∛1/27

Edge = 1/3 ft.

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3 years ago

Can anyone help with this equation? PLS<br> I need this for right now!

sashaice [31]

Answer: $5^{3}$

Step-by-step explanation:

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3 years ago