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\sf\large\green{\underbrace{\red{Befikra*}}}:.

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

User Mitra
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2 Answers

12 votes

Answer:


\sf\large\blue{\underbrace{\red{itz \: jass*}}}:

Explanation:


\sf\large\green{\underbrace{\red{hlo \: \: sat \: shri \: akal \: ji \: \: \: *}}}:

\sf\large\green{\underbrace{\red{Befikra*}}}:. The first term of an arithmetic sequence-example-1
\sf\large\green{\underbrace{\red{Befikra*}}}:. The first term of an arithmetic sequence-example-2
\sf\large\green{\underbrace{\red{Befikra*}}}:. The first term of an arithmetic sequence-example-3
User SnowmanXL
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8.7k points
10 votes

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, ………….

User Mironych
by
7.2k points
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