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The first term of an arithmetic sequence is 1 and the sum of the first four terms is 100. Find the first four terms​

Respuesta :

juwairiyah53

First term f = 1

If first four terms are f, f + d, f + 2d, f + 3d

f + f + d + f + 2d + f + 3d = 100

4f + 6d = 100 (divided by 2 , both sides )

2f + 3d = 50

2 + 3d = 50

3d = 50 – 2

3d = 48

d = 48/3

d = 16

The arithmetic sequence is 1, 17, 33, 49, ………….

satwant03112

Answer:

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Step-by-step explanation:

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