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Serga [27]
3 years ago
10

Solve for x only type in numbers what are these called​

Mathematics
1 answer:
Brilliant_brown [7]3 years ago
3 0

Answer:

25

Step-by-step explanation:

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Find the standard deviation for the given sample data. Round your answer to one more decimal place than is present in the origin
Tema [17]

Answer:

s = 19.7

Step-by-step explanation:

First we need to calculate the mean x' of the sample as:

x'=\frac{55+18+39+20+20+44+69}{7}=37.9

We sum all the scores and divide them by the number of scores.

Then, the standard deviation s is calculated as:

s=\sqrt{\frac{(55-37.9)^2+(18-37.9)^2+(39-37.9)^2+(20-37.9)^2+(20-37.9)^2+(44-37.9)^2+(69-37.9)^2}{7-1} }\\ s=19.7

We square every score less the mean, sum every value, then divide that by the number of scores less 1 and finally, we calculate the square root.

So, the standard deviation of the sample is 19.7

8 0
4 years ago
I need help on 1 and 3
jasenka [17]

Answer:

4x plus 3 is 3 so you would put 0,3 so whatever x is multiply that by 4 than add 3 and than plot it remember that y always goes up and x goes across

Step-by-step explanation:

5 0
4 years ago
Triangles are used for strength in roof trusses. In the diagram, UV and VW are midsegments of RST. Find UV and RS. RWT= 90in. VW
velikii [3]

Answer:

I believe UV=45 and RS=114

<h2>THIS COULD BE WRONG, IF IT IS I'M SORRY, THIS IS THE ANSWER I GOT</h2>

7 0
2 years ago
Whats -7 x 5? Can you also explain how you did it?
goldenfox [79]

Answer:

-35

Step-by-step explanation:

+ x + = +

- x - = +

- x + = -

hope that helps

8 0
3 years ago
Read 2 more answers
Find the missing side. Round to the nearest tenth.
AnnZ [28]

Answer:

B. 29.5

Step-by-step explanation:

Cos=A/H

=12/x

x=12/cos66

4 0
3 years ago
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