Answer:
an = 10n - 9.
Step-by-step explanation:
This is arithmetic with first term a1 = 1 and common difference 10.
an = a1 + d(n-1)
= 1 + 10(n - 1)
= 1 + 10n - 10
= 10n - 9.
Answer:
60
Step-by-step explanation:
Simple, just divide 120 by 2.
Answer:
1.89
Step-by-step explanation:
0.09+1.5+0.3