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Kay [80]
3 years ago
7

The formula for the volume of a cylinder is V = πr2h. The volume of a cylinder is three times the volume of a cone with the same

radius and height. If the volume of a cone with the same height as a cylinder equals the volume of the cylinder, the equation for the radius of cone R in terms of the radius of cylinder r is
Mathematics
2 answers:
vivado [14]3 years ago
6 0

Answer:

A on egde

Step-by-step explanation:

givi [52]3 years ago
5 0
Since both objects are assumed to have the same volume, matching the formulas we'll get:

πr^{2}h = \frac{1}{3}πR^{2}h

Having both <span>π and h at both sides of the equation, we can ignore them, so:

</span><span>r^{2} = \frac{1}{3}R^{2}
</span>
And clearing R, according to the equation rules, we'll get:

\sqrt[2]{3 r^{2} } = R
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Which number could be a root of f(x)=0 with a multiplicity of 4?<br><br> 3<br> -2<br> -3<br> 2
meriva
The best and the most correct answer among the choices provided by the question is the second choice. The number that <span>could be a root of f(x)=0 with a multiplicity of 4 is -2. </span>I hope my answer has come to your help. God bless and have a nice day ahead!
4 0
3 years ago
Among a sample of 55 male soldiers the average shower time was found to be 2.95 minutes and the population standard deviation is
Oksanka [162]

Answer: -3.0593

Step-by-step explanation:

The test statistic for the difference between two population mean (when population standard deviations \sigma_1\ \&\ \sigma_2  are known ) is given by :-

z=\dfrac{\overline{x}_1-\overline{x}_2}{\sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma_2^2}{n_2}}}

where ,

n_1\ \&\ n_2 = Sample sizes taken from two  populations 1 and 2.

\overline{x}_1-\overline{x}_2 = Difference between two Sample mean.

\sigma_1\ \&\ \sigma_2 = Standard deviations of populations 1 and 2.

As per given , we have

n_1=55\ \&\ n_2=58

\overline{x}_1=2.95\ \&\ \overline{x}_2=3.3

\sigma_1=0.65\ \&\ \sigma_2=0.56

We assume that the data follows a normal distribution.

Then, the test statistic will be :-

z=\dfrac{2.95-3.3}{\sqrt{\dfrac{(0.65)^2}{55}+\dfrac{(0.56)^2}{58}}}\\\\=\dfrac{-0.35}{\sqrt{0.0130887}}\\\\=\dfrac{-0.35}{0.1144059}=3.05928278174\approx-3.0593  

Hence, the test statistic= -3.0593

5 0
4 years ago
What is the line of reflection for the trapezoids<br><br> X=3<br> Y=3<br> X-axis<br> Y-axis
Vladimir [108]

Answer:

x = 3

Step-by-step explanation:

The line of reflection is x = 3.

6 0
3 years ago
Read 2 more answers
what are the intercepts of the equation 2.5x+8y=200 and/or how can i write it in slope intercept form
Inessa05 [86]

Answer:

The slope is -.3125 and the y intercept is 25

The x intercept is 80

Step-by-step explanation:

2.5x+8y=200

We want to get this in slope intercept form so we will solve for y

Subtract 2.5x from each side

2.5x-2.5x+8y=-2.5x +200

8y = -2.5x +200

Now divide by 8 on both sides

8y/8 = -2.5x/8 + 200/8

y = -.3125x +25

This is in the form y = mx+b  where m is the slope and b is the y intercept

The slope is -.3125 and the y intercept is 25

To find the x intercept, set y = 0 and solve for x

2.5x+8y=200

2.5x = 200

Divide by 2.5 on each side

2.5x/2.5 = 200/2.5

x =80

8 0
3 years ago
Read 2 more answers
PLEASE HELP!!! PLZ!!!
Helen [10]
We can use the vertex form
y = a {(x - h)}^{2}  + k
to find the equation of the graph. We know that a is the coefficient, and since the graph opens upwards and is slightly stretched vertically, we know that a is 1/3. On the graph, we see that the vertex of the parabola is at (0,-1). Therefore, h is 0 and k is -1.
Our vertex form equation is
y =  \frac{1}{3} {x}^{2}  - 1
Which is D
7 0
4 years ago
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