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

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

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

Mikael
 2 years ago
Best ResponseYou've already chosen the best response.0Hi there, the first just asks you their sum

hawkfalcon
 2 years ago
Best ResponseYou've already chosen the best response.0Wait what seriously?

hawkfalcon
 2 years ago
Best ResponseYou've already chosen the best response.0The e thingy with the i = 1 is saying add them up?

Mikael
 2 years ago
Best ResponseYou've already chosen the best response.0the "thingy" is subscript i (small hard to read ;) )

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

eseidl
 2 years ago
Best ResponseYou've already chosen the best response.1The second equation asks you to take the sum of the squares of x1, x2, x3 and x4

eseidl
 2 years ago
Best ResponseYou've already chosen the best response.1and then divide by four :)

hawkfalcon
 2 years ago
Best ResponseYou've already chosen the best response.0sorry, i couldn't connect. It is a 1, not an i.

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

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