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iragen [17]
3 years ago
5

Is this formula correct?

Mathematics
1 answer:
Flura [38]3 years ago
6 0

Hey there!!

Volume of a cone : πr²h/3

Where, πr²h is the volume of a cylinder.

Hence,

V cone = V cylinder / 3

Hence,

The above mentioned formula is wrong/false.

Hope my answer help!!

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Each morning, Hungry Harry eats some eggs. On any given morning, the number of eggs he eats is equally likely to be 1, 2, 3, 4,
mamaluj [8]

Answer:

Mean = 35

Variance = 291.7

Step-by-step explanation:

Data provided in the question:

X : 1, 2, 3, 4, 5, 6

All the data are independent

Thus,

The mean for this case will be given as:

Mean, E[X] = \frac{\textup{Sum of all the observations}}{\textup{Total number of observations}}

or

 E[X] = \frac{\textup{1+2+3+4+5+6}}{\textup{6}}

or

E[X] = 3.5

For 10 days, Mean = 3.5 × 10 = 35

And,

variance = E[X²] - ( E[X] )²

Now, for this case of independent value,

E[X²] = \frac{1^2+2^2+3^2+4^2+5^2+6^2}{\textup{6}}

or

E[X²] = \frac{1+4+9+16+25+36}{\textup{6}}

or

E[X²] = \frac{91}{\textup{6}}

or

E[X²] = 15.167

Therefore,

variance = E[X²] - ( E[X] )²

or

variance = 15.167 - 3.5²

or

Variance = 2.917

For 10 days = Variance × Days²

= 2.917 × 10²

= 291.7

3 0
3 years ago
If a staff of 9 people had to clean a hotel with 198 rooms, how many would each person have to clean if they devided the rooms e
dedylja [7]
You would divide 198 by 9.
198÷9=22
Each person would clean 22 rooms.
5 0
3 years ago
A 12-foot wire supports a tree creating a 48 degreee angle. What is the closest distance up the tree that the wire reaches?
BartSMP [9]

The closest distance up the tree where the wire reaches is 17.93 foot.

<u>Explanation:</u>

Given-

Length of the wire, L = 12 foot

angle, Ф= 48°

Distance upto which the wire reaches the tree, x = ?

We know,

cos Ф = base/ hypotenuse

cos 48° = 12/ x

0.669 = 12/x

x = 17.93 foot

Therefore, the closest distance up the tree where the wire reaches is 17.93 foot.

5 0
3 years ago
If<br> 4x + y = 13<br> - y = 2<br> then y =
ira [324]

Answer:

y = 2

Step-by-step explanation:

-y = 2, that means y = opposite of 2, which is -2

<em>Hope that helps! :)</em>

6 0
3 years ago
Read 2 more answers
Owen Mixes purple paint. He uses 3 pints of blue paint for every 5 pints of red paint. He has 17 1/2 pints of red paint. How muc
Salsk061 [2.6K]
This is a duplicate question
4 0
3 years ago
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