Question

if the first term of the sequence is 6 and the fourth term is 12 find the common difference

Answer 1

Answer:

a=6

a4=12

12=6+3d

12-6=3d

6=3d

d=6/3=2

Answer 2

Answer:

2

Step-by-step explanation:

a4 = a+(n-1)d

12 =6+(4-1)d

6 = 3d

2 = d

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