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klemol [59]
3 years ago
10

The sum of an a.p is 340. the first term is 7 and the common difference is 6. Cal the number of terms in the sequence.

Mathematics
2 answers:
damaskus [11]3 years ago
6 0

Common difference: 6

First term: 7

Second term: 13

Third term: 19

Fourth term: 25

Fifth term: 31

I hope this is correct and helps!

Katyanochek1 [597]3 years ago
6 0

Answer to the following question is as follows;

Number of term in AP (N) = 10

Step-by-step explanation:

Given:

Sum of arithmetic progression (Sn) = 340

First term of AP (a) = 7

Common difference of AP (d) = 6

Find;

Number of term in AP (N)

Computation:

Sn = [n/2][2a + (n-1)d]

340 = [n/2][2(7) + (n-1)6]

340 = [n/2][14 + 6n - 6]

680 = n[6n + 8]

6n² + 8n - 680

Using Quadratic Formula

n = 10

Number of term in AP (N) = 10

Learn more:

brainly.com/question/21859759?referrer=searchResults

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