Math, asked by kochuthersiaantony, 1 month ago

write first 3 terms of arithmetic sequence a. first term is 60 ;the sum of first 3term is 600 b. first term is 60 the sum of first 4 term is 300​

Answers

Answered by Lohit260708
0

Answer:

Step-by-step explanation:

The three terms are 30,100,170

The first term a is given by 30 , let the common difference be d

Sum of first three terms =300

Sum of n terms of an AP is given by (n÷2)×(2a+(n-1)×d)

In this case n=3 and a=30

(3÷2)×(60+2d)=300

60+2d=200

2d=140

d=70

The second term is 30+70=100

The third term is 100+70=170

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