Answer:
A1: 40/3 = 13.33
A2: 1/2 = 20 (half of 40) 40/20 = 2
Sn = n/2 (a1+an)
= 8/2 (3-38)
= 4 (-35)
= -140
Answer:
The sequence above is a geometric sequence
For an nth in a geometric sequence

where n is the number of terms
a is the first term
r is the common ratio
From the question
a = 45
r = 15 / 45
The explicit formula for the sequence is
U(n) = 45(1/3)^n-1
Hope this helps you
The answer is 8
6(4)-16=8 :)
Answer:
3.60
Step-by-step explanation:
1.80 x 2