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2 years ago

8

A cone has a diameter of 4 centimeters and a height that is 6 times the diameter. Using 3.14 for pi, which of the following can

be used to calculate the volume of the cone?

1 answer:

Irina-Kira [14]2 years ago

4 0

I hope this helps you

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Kennedy can type 150 words in 2 minutes. How many words per minute can Kennedy type?

zubka84 [21]

Answer:

75

Step-by-step explanation:

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2 years ago

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Sketch the equilibrium solutions for the following DE and use them to determine the behavior of the solutions.

GREYUIT [131]

Answer:

$y=\dfrac{1}{1-Ke^{-t}}$

Step-by-step explanation:

Given

The given equation is a differential equation

$\dfrac{dy}{dt}=y-y^2$

$\dfrac{dy}{dt}=-(y^2-y)$

By separating variable

⇒ $\dfrac{dy}{(y^2-y)}=-t$

$\left(\dfrac{1}{y-1}-\dfrac{1}{y}\right)dy=-dt$

Now by taking integration both side

$\int\left(\dfrac{1}{y-1}-\dfrac{1}{y}\right)dy=-\int dt$

⇒ $\ln (y-1)-\ln y=-t+C$

Where C is the constant

$\ln \dfrac{y-1}{y}=-t+C$

$\dfrac{y-1}{y}=e^{-t+c}$

$\dfrac{y-1}{y}=Ke^{-t}$

$y=\dfrac{1}{1-Ke^{-t}}$

from above equation we can say that

When t will increases in positive direction then $e^{-t}$ will decreases it means that ${1-Ke^{-t}}$ will increases, so y will decreases. Similarly in the case of negative t.

4 0

3 years ago

Help with both questions offering 10 points

Alexandra [31]

Answer:

$\:\mathrm{First\: problem:\:}-2,\\\:\mathrm{Second\: problem:\: }-3$

Step-by-step explanation:

The slope of a line passing through points $(x_1, y_1)$ and $(x_2, y_2)$ is:

$m=\frac{\Delta y}{\Delta x}=\frac{y_2-y_1}{x_2-x_1}$

Plugging in any two points in the table we have:

<u>First problem:</u>

<u /> $m=\frac{1-5}{2-0}=\frac{-4}{2}=\fbox{$-2$}$ <u />

<u>Second problem:</u>

<u /> $m=\frac{-1-5}{2-0}=\frac{-6}{2}=\fbox{$-3$}$ <u />

8 0

2 years ago

Read 2 more answers

lyudmila [28]

Here I have answered your question. Hope this helps. pls give brainliest if possible. tks. Have a nice day!!

3 0

2 years ago

|x| = x <br><br>Always <br><br>Sometimes<br><br>Never

Mnenie [13.5K]

Answer:

Sometimes

Step-by-step explanation:

Lets see

Let x be a positive number

x=3

|3| = 3

True

Let x =0

|0| = 0

True

Let x be a negative number

x=-3

|-3| =-3

3 = -3

False

So this is sometimes true

7 0

2 years ago