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2 years ago

Find an equation for the nth term of the arithmetic sequence. -20, -16, -12, -8, .

Mathematics

2 answers:

devlian [24]2 years ago

8 0

Answer:

1) a30=96

2) 30(-20+96)/2

3) 1140

ollegr [7]2 years ago

7 0

We are given with the sequence -20, -16, -12, -8. From this sequence, we can see that the arithmetic difference is +4, from -(-20 + 16). hence following the arithmetic formula of an = a1 + d *(n-1). Substituting, an = -20 + 4 *(n-1) where n is an integer

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Step-by-step explanation:

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