2 years ago

Evaluate the summation

Mathematics

2 answers:

polet [3.4K]2 years ago

6 0

Answer:

114

Step-by-step explanation:

The first term (a1) = 1 + 3 = 4 (substituting 1 for i)

The last term (L) = 12 + 3 = 15

So the sum of the 12 terms = (n/2)(a1 + L)

= (12/2) (4 + 15)

= 6 * 19

= 114 (answer)

Bad White [126]2 years ago

4 0

Answer:

114 so D is the correct choice

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