determine whether the given sequence is arithmetic or geometric.if it is arithmetic ,then give the common diff.if it is geometric ,then give its common ratio
1: 81,27,9,3 _____ ____
2:4,9,14,19 _____ ____
pa help po
1: 81,27,9,3 _____ ____
2:4,9,14,19 _____ ____
pa help po
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Answer:
1. r = 0.33333
2. d = 5
Step-by-step explanation:
1. r = 27/81 = 0.33333
2. 19 = 4 + 3d
19 - 4 = 3d
15 = 3d
15/3 = 3d/3
d = 5