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VMariaS [17]
3 years ago
14

Evaluate the summation

Mathematics
2 answers:
polet [3.4K]3 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]3 years ago
4 0

Answer:

114 so D is the correct choice


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