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2 years ago

77th term for -10,-8,-6

Mathematics

1 answer:

sasho [114]2 years ago

4 0

9514 1404 393

Answer:

142

Step-by-step explanation:

The first term of this arithmetic sequence is -10. The common difference is -8-(-10) = 2. The n-th term is ...

an = a1 +d(n -1)

an = -10 +2(n -1) = 2n -12

Then the 77th term is ...

a77 = 2(77) -12 = 154 -12

a77 = 142

The 77th term is 142.

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