Question What is the first term of the fibonacci like sequence whose second term is 4 and whose fith term is 22?

Answer: -2 Step-by-step explanation: The information in the question can be used to form an equation which goes thus: 2nd term = a + d = 4 …… i 5th term = a + 4d = 22 ……. ii From equation i a = 4 – d …….. iii Put equation iii into ii a + 4d = 22 (4 – d) + 4d = 22 4 – d + 4d = 22 4 + 3d = 22 3d = 22 – 4 3d = 18 d = 18/3 d = 6 Commons difference is 6 Since a + d = 4 a + 6 = 4 a = 4 – 6 a = -2 The first term is -2 Log in to Reply

Answer: -2

Step-by-step explanation:

The information in the question can be used to form an equation which goes thus:

2nd term = a + d = 4 …… i

5th term = a + 4d = 22 ……. ii

From equation i

a = 4 – d …….. iii

Put equation iii into ii

a + 4d = 22

(4 – d) + 4d = 22

4 – d + 4d = 22

4 + 3d = 22

3d = 22 – 4

3d = 18

d = 18/3

d = 6

Commons difference is 6

Since a + d = 4

a + 6 = 4

a = 4 – 6

a = -2

The first term is -2