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arlik [135]
4 years ago
14

What is the sum of the first 28 terms of this arithmetic sequence? 69, 75, 81, 87, 93, 99, …

Mathematics
1 answer:
Doss [256]4 years ago
5 0
It increases by 6 each term, so building off of the first 6 terms you provided....
69, 75, 81, 87, 93, 99, 105, 111, 117, 123, 129, 135, 141, 147, 153, 159, 165, 171, 177, 183, 189, 195, 201, 207, 213, 219, 225, 231

Hope this helps!
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Answer:

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Step-by-step explanation:

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This is an ellipse centered at the origin;

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Step-by-step explanation:

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Step-by-step explanation:

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