hawkfalcon
  • hawkfalcon
Evaluate for m and evaluate the equation
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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hawkfalcon
  • hawkfalcon
let \[x1=6, x2=8,x3=9, x4=13. Evaluate m=\sum_{i=1}^{4}x1\]
hawkfalcon
  • hawkfalcon
Then use the values of x1, x2, x3, x4, and m to evaluate \[\frac{ \sum_{i=1}^{4}(x1=m)^2 }{4 }\]
hawkfalcon
  • hawkfalcon
Noone?:(

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More answers

anonymous
  • anonymous
Isn't the first equation just telling you to add up x1, x2, x3 and x4...or am I missing something?
hawkfalcon
  • hawkfalcon
no, xsubscript 1
anonymous
  • anonymous
Hi there, the first just asks you their sum
hawkfalcon
  • hawkfalcon
Wait what seriously?
hawkfalcon
  • hawkfalcon
The e thingy with the i = 1 is saying add them up?
anonymous
  • anonymous
You simply mis-read
anonymous
  • anonymous
yep
hawkfalcon
  • hawkfalcon
o.O
anonymous
  • anonymous
the "thingy" is subscript i (small hard to read ;) )
anonymous
  • anonymous
just add them. I think the equation should read:\[\sum_{i=1}^{4}x_i\]
anonymous
  • anonymous
where m is the sum.
anonymous
  • anonymous
The second equation asks you to take the sum of the squares of x1, x2, x3 and x4
anonymous
  • anonymous
and then divide by four :)
hawkfalcon
  • hawkfalcon
sorry, i couldn't connect. It is a 1, not an i.
hawkfalcon
  • hawkfalcon
@Mikael
anonymous
  • anonymous
Well, that is kind of a strange question. Because, if x1=6, then\[\sum_{i=1}^{4}6=4(6)=24\]
anonymous
  • anonymous
Similarly,\[\frac{\sum_{i=1}^{4}(6)^2}{4}=\frac{4(36)}{4}=36\]

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