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k0ka [10]
3 years ago
10

Can someone please help me answer this question.?

Mathematics
1 answer:
SashulF [63]3 years ago
3 0

Answer:

d=8.0 meters

Step-by-step explanation:

The volume of a cone is given by

V = 1/3 pi r^2 h

We are given the volume and the height

117.23 and the height 7

117.23 = 1/3 *3.14 *r^2 * 7

117.23 = 7.3266666666 *r^2

Divide each side by 7.3266666666

117.23/7.3266666666 = 7.3266666666 *r^2/7.3266666666

16.00045496 = r^2

Take the square root of each side

sqrt(16.00045496) =sqrt( r^2)

4.000 = r

We found the radius but it wants the diameter

d = 2*r

d =2*4.0

d=8.0 meters

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Can someone help me with this : 4g = 8
ratelena [41]

Answer:

4g = 8

You would just have to divide 4 on both sides. The 4's would cancel out and now your left with 8÷4 = 2

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Pls help.
Aleonysh [2.5K]

The point C at a coordinate of (-3, 4) is the center of dilation of shapes WXYZ to W'X'Y'Z'

<h3>How to determine the center of dilation?</h3>

The coordinates are given as:

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Next, we plot the points on a coordinate plane

From the plane (see attachment), we can see that the point C at a coordinate of (-3, 4) is at the center of both shapes, and it is 1 unit from WXYZ and 3 units from W'X'Y'Z'.

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3 years ago
Differentiating Exponential functions In Exercise,find the derivative of the function. See Example 2 and 3.
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Answer: -2xe^{-x^2}

Step-by-step explanation:

Let u be a differentiable function , then

\dfrac{d}{dx}(e^x)=e^x

\dfrac{d}{dx}e^u=e^u\dfrac{du}{dx}              (1)

Given function : y = e^{-x^2}

Differentiate both sides with respect to x , we get

y'=e^{-x^2}\dfrac{d(-x^2)}{dx}  (By using  (1))

\Rightarrow\ y'=e^{-x^2}(-2x)  [∵ \dfrac{d}{dx}(x^n)=x^{n-1}]

\Rightarrow\ y'=-2xe^{-x^2}

Hence, the derivative of the given function is -2xe^{-x^2} .

4 0
4 years ago
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