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Harman [31]
3 years ago
8

Find the sum of the first 30 terms for the given arithmetic sequence.

Mathematics
1 answer:
SOVA2 [1]3 years ago
6 0

Answer:

Step-by-step explanation:

Find the last term of the sequence.

a1 = 8

d = -7

n = 30

a30 = 8 + (n - 1)*(-7)

a30 = 8 + (30 - 1)*-7

a30 = 8 + 29*-7

a30 = 8 - 203

a30 = -195

Sum = (a + L)*n/2

Sum = (8 + -195) * 30/2

Sum = - 187  * 15

Sum = - 2805

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Answer:

The number is 623.

Step-by-step explanation:

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4 0
3 years ago
Mario is making dinner for 9 people.Mario buys 6 containers of soup.Each container is 18 ounces.If everyone gets the same amount
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3 years ago
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Dr. Iske Larkin stated that she had done some work on nutrition in Manatees. One of the questions that she was interested in was
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3 0
3 years ago
Which statement is true?
valentinak56 [21]

Answer:

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Step-by-step explanation:

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<em>Additional comment</em>

A compound "and" statement is only true if <u>all</u> of the parts of it are true.

8 0
2 years ago
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