Question

Match the sequence (term) with the correct type of sequence (definition).

Answer 1

Answer:

1. 5, 10, 15, 20, = C. Arithmetic, common difference is 5

2. 128, 32, 8, 2, = Geometric , Common ratio is 0.25

3. 20, 17, 14, 11, = Arithmetic , Common difference is -3

4. 1, 3, 9, 27, = Geometric , common ratio is 3

Step-by-step explanation:

In arithmetic sequence we calculate the common difference and it is gotten by:

$T_2-T_1 \: or \\ T_4-T_3$

In geometric progression we calculate common ratio and it is gotten by :

$\frac{T_2}{T_1} \: or \: \\ \frac{T_4}{T_3}$