Question

Find the indicated sum.

Answer 1

Answer:

B. 70

Step-by-step explanation:

We have the sum given by $\sum_{i=1}^{5}(i+11)).$

Now, we open the summation by substituting the values of 'i',

i.e. $\sum_{i=1}^{5}(i+11)).$ = (1+11) + (2+11) + (3+11) +(4+11) +(5+11)

i.e. $\sum_{i=1}^{5}(i+11)).$ = 12 + 13 + 14 + 15 + 16

i.e. $\sum_{i=1}^{5}(i+11)).$ = 70.

Hence, the sum of $\sum_{i=1}^{5}(i+11)).$ is 70.

So, option B is correct.