Thursday

August 28, 2014

August 28, 2014

Posted by **Carol** on Tuesday, June 4, 2013 at 12:26pm.

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?

- Math for Educators -
**bobpursley**, Tuesday, June 4, 2013 at 12:41pmno, 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

**Related Questions**

Math for Educators - Use Gauss's approach to find the following sums (do not use...

Probability - Roll 3 dice. What is the probability of getting a sum of: A) sum ...

Math - an = 3n - 1 Answer 2, 3, 4, 5 2, 5, 8, 11 -2, -5, -8, -11 4, 7, 10, 13 3...

Math - Question 1 Write the first four terms of the sequence whose general term...

Math PLEASE HELP PLEASE PLEASE PLEASE - Question 1 Write the first four terms ...

Math for Educators - Find the 9th term of sequence. 4, 12, 36, 108, .... The 9th...

Precalculus - Find the sum of the first 50 terms of the sequence 2,4,6,8...

Math ( Can You check my Work?) - 1.an = 3n - 1 2. an = 2(2n - 3) 3.an = 4^n 4.an...

Math for Educators - The first difference of a sequence is 8, 12, 16, 20,... The...

Further mathematics - An exponential sequence (GP)of positive terms and a linear...