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hawkfalconBest ResponseYou've already chosen the best response.0
let \[x1=6, x2=8,x3=9, x4=13. Evaluate m=\sum_{i=1}^{4}x1\]
 one year ago

hawkfalconBest ResponseYou've already chosen the best response.0
Then use the values of x1, x2, x3, x4, and m to evaluate \[\frac{ \sum_{i=1}^{4}(x1=m)^2 }{4 }\]
 one year ago

eseidlBest ResponseYou've already chosen the best response.1
Isn't the first equation just telling you to add up x1, x2, x3 and x4...or am I missing something?
 one year ago

MikaelBest ResponseYou've already chosen the best response.0
Hi there, the first just asks you their sum
 one year ago

hawkfalconBest ResponseYou've already chosen the best response.0
Wait what seriously?
 one year ago

hawkfalconBest ResponseYou've already chosen the best response.0
The e thingy with the i = 1 is saying add them up?
 one year ago

MikaelBest ResponseYou've already chosen the best response.0
the "thingy" is subscript i (small hard to read ;) )
 one year ago

eseidlBest ResponseYou've already chosen the best response.1
just add them. I think the equation should read:\[\sum_{i=1}^{4}x_i\]
 one year ago

eseidlBest ResponseYou've already chosen the best response.1
The second equation asks you to take the sum of the squares of x1, x2, x3 and x4
 one year ago

eseidlBest ResponseYou've already chosen the best response.1
and then divide by four :)
 one year ago

hawkfalconBest ResponseYou've already chosen the best response.0
sorry, i couldn't connect. It is a 1, not an i.
 one year ago

eseidlBest ResponseYou've already chosen the best response.1
Well, that is kind of a strange question. Because, if x1=6, then\[\sum_{i=1}^{4}6=4(6)=24\]
 one year ago

eseidlBest ResponseYou've already chosen the best response.1
Similarly,\[\frac{\sum_{i=1}^{4}(6)^2}{4}=\frac{4(36)}{4}=36\]
 one year ago
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