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2 years ago

How de you find standard deviation

Mathematics

1 answer:

Amiraneli [1.4K]2 years ago

3 0

Answer:

Work out the Mean (the simple average of the numbers)

Then for each number: subtract the Mean and square the result.

Then work out the mean of those squared differences.

Take the square root of that and we are done!

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You are carpeting a boardroom which measures 16 feet by 14.5 feet

trapecia [35]

Answer:

If you are finding the Area in which you would need for the carpet would be A= 232 ft

Step-by-step explanation:

A = lw

l = 16

w = 14.5

16 x 14.5 = 232 feet

5 0

3 years ago

A stereo system is being installed in a room with a rectangular floor measuring 19 feet by 12 feet and a 7-foot ceiling. The st

krek1111 [17]

Answer:

The shortest length of wire that can be used is 29.47 ft.

Step-by-step explanation:

To solve this problem we can follow the following steps:

1) We have the dimensions of the floor of the room. The shortest distance between its opposite corners is the diagonal. We calculate the diagonal using the Pythagorean theorem.

$L = \sqrt{12^2 + 19^2}\\\\L= 22.47\ ft$

2) Since the speaker is on the ceiling, and the amplifier is on the floor, then 7 more feet of wire is needed to reach the speaker. Observe the attached image

3) The final distance (d) is:

$d = 22.47\ ft + 7\ ft\\\\d = 29.47\ ft$

6 0

2 years ago

On Monday, Zach sends an e-mail message

Charra [1.4K]

Written out numerically, it is 4x4x4. To work this out you multiply 4x4= 16 and then you have one more 4 to multiply by, so you multiply 16x4=64

4 0

2 years ago

there's some number that if you subtract 15 from it first, and then multiply that total by 7, the result is 28. find the number

yulyashka [42]

(x-15)*7=28

x-15=4

x=19

Final answer: 19

6 0

2 years ago

Read 2 more answers

Express x in terms of the other variables in the diagram below:

GrogVix [38]

For the answer to the question above, just use similar triangles.
Here's the equations that I used.

t/h = (x + t) / r 
x + t = rt / h 
x = rt / h - t
I hope my answer helped you in your problem, Have a nice day

6 0

2 years ago

Read 2 more answers

How de you find standard deviation ​

How de you find standard deviation