Asked by Desire
Given that the first term of an AP is 7 and its 10th term is twice the second term, calculate
a. 19th term b. Sum of the 28th term c. Difference between the 9th and 6th term?
a. 19th term b. Sum of the 28th term c. Difference between the 9th and 6th term?
Answers
Answered by
mathhelper
a = 7
a+9d = 2(a+d)
7 + 9d = 14 + 2d
7d = 7
d = 1
Now you have a and d, use your formulas to find all the questions that were asked.
a+9d = 2(a+d)
7 + 9d = 14 + 2d
7d = 7
d = 1
Now you have a and d, use your formulas to find all the questions that were asked.
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