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3 years ago

Find the sum of the 30th term of the following terms 9,17,25

Mathematics

2 answers:

Alchen [17]3 years ago

4 0

Answer:the sum of the first 30 terms is 3750

Step-by-step explanation:

The formula for determining the sum of n terms of an arithmetic sequence is expressed as

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

Where

n represents the number of terms in the arithmetic sequence.

d represents the common difference of the terms in the arithmetic sequence.

a represents the first term of the arithmetic sequence.

From the information given,

n = 200 terms

a = 9

d = 8

Therefore, the sum of the first 30 terms, 30 would be

S30 = 30/2[2 × 9 + (30 - 1)8]

S30 = 15[18 + 29 × 8]

S30 = 15[18 + 232]

S30 = 3750

maria [59]3 years ago

3 0

The equation is arithmetic so y= 8x+1. plug in 30 for x. y= 8(30)+1 and y=241!

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