Asked by Daniella
The 3rd term of an ap is 9 while the 11th term is -7,find the first five term of ap
Answers
Answered by
Steve
T11-T3 = 8d = (-7)-9 = -16
so, d = -2
Now you can find a, and then write the 1st 5 terms.
Or, knowing d=-2, and T3=9, you can work from both sides of T3:
13 11 <u>9</u> 7 5
so, d = -2
Now you can find a, and then write the 1st 5 terms.
Or, knowing d=-2, and T3=9, you can work from both sides of T3:
13 11 <u>9</u> 7 5
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