Asked by Josiah

the sum of the first and second terms of ap is 4 and the tenth term is 19. find the sum of the 5th and 6th
Answered by Steve
a + a+d = 4
a+9d = 19

a=1
d=2

So, now add T5 and T6
Answered by Adenike
T5=9. T6=11
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