Question

The 3rd term of an arithmetic sequence is 13 and 6th term is 25 What is the commom differents? Find first term​

Answer 1

Step-by-step explanation:

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Answer 2

HEY MATE

THE THIRD TERM IS 13

WE CAN WRITE THE THIRD TERM AS a+2d

THEN, a+2d=13

and, THE SIXTH TERM IS 25

WE CAN WRITE IT THE SIXTH TERM AS a+5d

NOW a+5d=25 - (ii)

NOW THIRD TERM , a+2d=13

a=13-2d -(iii)

PUT THE VALUE OF (iii) in (ii) we get

• 13-2d+5d=25
• 13+3d=25
• 3d=25-13
• 3d=12
• d=4

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