99,89.9,78.8,68.7,.
Answer:
Neither arithmetic nor geometric
Step-by-step explanation:
Since 99-89.9= 9.1, and 89.9 - 78.8 = 11.1, the sequence is not arithmetic.
Likewise 89.9/99=0.908 and 78.8/89.9 = 0.876 makes it not a geometric sequence
Answer:
geometric
Step-by-step explanation: