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kow [346]
3 years ago
5

The mean and standard deviation when presenting results?

Mathematics
1 answer:
krek1111 [17]3 years ago
7 0

Answer:

Standard deviation is a number used to tell how measurements for a group are spread out from the average (mean), or expected value. A low standard deviation means that most of the numbers are close to the average. A high standard deviation means that the numbers are more spread out.

Step-by-step explanation:

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Will give out brainliest for the CORRECT answer!
ch4aika [34]

Answer:

162-x=180

x=342

Step-by-step explanation:

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3 years ago
Choose the correct simplification of (4x − 3)(3x2 − 4x − 3).
Korolek [52]

the expression simplified is:

12x^3 - 25x^2 + 9

<h3>How to simplify the given expression?</h3>

Here we have the expression:

(4x - 3)*(3x^2 - 4x - 3)

We just need to distribute the product, we will get:

(4x - 3)*(3x^2 - 4x - 3)\\\\(4x)*(3x^2 - 4x - 3)  - 3*(3x^2 - 4x - 3)\\\\12x^3 - 16x^2 - 12x - 9x^2 + 12x + 9

Now we just need to group terms with the same exponent of x:

12x^3 - 16x^2 - 12x - 9x^2 + 12x + 9\\\\12x^3 + (-16 - 9)x^2 + (-12 + 12)x + 9\\\\12x^3 - 25x^2 + 9

That is the expression simplified

If you want to learn more about simplification:

brainly.com/question/723406

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8 0
2 years ago
A robot can complete 8 tasks in 5/6 hour. each task takes the same amount of time.
nikklg [1K]
5/6 hour = 5/6 × 60 = 300/6 = 50 minutes

8 tasks in 50 minutes
1 task = 50/8 = 6 1/4 minutes

a. robot completes task in 6 1/4 minutes

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6.25n = 60.
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robot can complete 9 tasks in one hour
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3 years ago
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