What is the common difference of an ap in which d2-d7=84
Answers
Answered by
0
Answer:
a+(1)m-a-(6)m=84
5m=-84
m=-84/5
therefore
cd=-84/5
Answered by
1
Answer:
Step-by-step explanation:
A 21 = 10
A 7 = 84
A = 12 let it be x and then
Ap = a + ( n-1 )d
Ap = 10 /21 + 11d
200 = 231 d
Thus d = 200/231
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