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3 years ago

Geometry help! I need help with geometry.

Mathematics

2 answers:

Yanka [14]3 years ago

7 0

Answer:96°

Step-by-step explanation:

Just add 72° and 24° to get that answer

dusya [7]3 years ago

3 0

It's 96 if you were wondering

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Calculate the range, population variance, and population standard deviation for the following data set. If necessary, round to o

Roman55 [17]

Answer:

$Range = 11-2=9$

$\mu = \frac{2+3+4+5+6+7+8+9+10+11}{10}=6.5$

$\sigma^2 =8.25 \approx 8.3$

$\sigma = \sqrt{8.25}= 2.87 \approx 2.9$

Step-by-step explanation:

Assuming this question: "Calculate the range, population variance, and population standard deviation for the following data set. If necessary, round to one more decimal place than the largest number of decimal places given in the data. 2,3,4,5,6,7,8,9,10,11 "

Solution to the problem

The range is defined as $Range = Max -Min$ and if we replace we got:

$Range = 11-2=9$

Now we can calculate the population mean with this formula:

$\mu =\frac{\sum_{i=1}^n X_i}{N}$

And if we replace we got:

$\mu = \frac{2+3+4+5+6+7+8+9+10+11}{10}=6.5$

The population variance is given by:

$\sigma^2 = \frac{\sum_{i=1}^n (X_i -\mu)^2}{N}$

And after replace we got: $\sigma^2 =8.25 \approx 8.3$

And the population standard deviation would be just the square root of the variance and we got:

$\sigma = \sqrt{8.25}= 2.87 \approx 2.9$

4 0

4 years ago

3 points

kotegsom [21]

Answer:

<em>V = 65.9 cubic millimeters</em>

Step-by-step explanation:

<u>The Volume of a Right Circular Cone</u>

Given a right circular cone of radius r and height h, its volume is calculated as follows:

$\displaystyle V=\frac{1}{3}\pi r^2h$

The cone shown in the image has a radius of r=3 mm and a height of h=7 mm, thus the volume is:

$\displaystyle V=\frac{1}{3}\pi\cdot 3^2\cdot 7$

Taking pi as 3.14:

$\displaystyle V=\frac{1}{3}3.14\cdot 3^2\cdot 7$

Calculating:

V = 65.9 cubic millimeters

7 0

3 years ago

Use a word problem using integers and slove it in 3 ways

ICE Princess25 [194]

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3 0

4 years ago

Add the fractions and give me the answer?

Sedaia [141]

Answer:

21/20

Step-by-step explanation:

you find a common multiple for the 4 and 5, and multiply to get it. In this case, it would be 20. So, you multiply 1 and 4 by 5 so it would be 5/20. And multiply 4 and 5 by 4 to get 16/20. 5/20+16/20 is 21/20.

5 0

4 years ago

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jeyben [28]

Answer:

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3 years ago

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