if a2=14 ,a7=54 then find d? please help me,,am confused
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Answered by
0
Answer:
then find d = 3.5 is answer
Answered by
2
Step-by-step explanation:
a2= 14
a+(n-1)d=14
a+(2-1)d= 14
a+d= 14
a= 14-d (1)
and again,
a7= 54
a+(n-1)d= 54
a+(7-1)d=54
a+6d= 54
putting the value of a from (1)
14-d+6d= 54
5d= 54-14
d= 40/5= 8
therefore difference= 8
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