the following is an a.p 9 x y z 25 find the
3 answers
answers
solves
In A.P
a1 is first term
d is common difference
a1 = 9
a5 = 25
Since:
a5 = a1 + 4 d
25 = 9 + 4 d
Subtract 9 to both sides
16 = 4 d
4 d = 16
Divide both sides by 4
d = 4
x = a2 = a1 + d = 9 + 4 = 13
y = a3 = a1 + 2d = 9 + 8 = 17
z = a4 = a1 + 3d = 9 + 12 = 21
a1 is first term
d is common difference
a1 = 9
a5 = 25
Since:
a5 = a1 + 4 d
25 = 9 + 4 d
Subtract 9 to both sides
16 = 4 d
4 d = 16
Divide both sides by 4
d = 4
x = a2 = a1 + d = 9 + 4 = 13
y = a3 = a1 + 2d = 9 + 8 = 17
z = a4 = a1 + 3d = 9 + 12 = 21