Asked by Carol
Find the sum of the sequence.
38+39+40+41+...+137
The sum is?
My answer 175(99)= 17,325
Is this correct? If not how do I get the correct answer?
38+39+40+41+...+137
The sum is?
My answer 175(99)= 17,325
Is this correct? If not how do I get the correct answer?
Answers
Answered by
bobpursley
no, no.
first: there are 100 terms here.
second, how did you get 175 as the mean? 175 is greater than the highest term? The mean is 175/2
the mean is 137+38 divided by 2
one hundred terms x mean=below
sum= 100(38+137)/2=175*50=8750
first: there are 100 terms here.
second, how did you get 175 as the mean? 175 is greater than the highest term? The mean is 175/2
the mean is 137+38 divided by 2
one hundred terms x mean=below
sum= 100(38+137)/2=175*50=8750
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