Answer:
an = 63(-1/3)^(n-1)
Step-by-step explanation:
This is a geometric sequence with first term 63 and common ratio -1/3.
The equation for the nth term  is
an = 63(-1/3)^(n-1).
 
        
             
        
        
        
Answer:
30.285 m²
Step-by-step explanation:
C = 2πr
2 · π · 2 
≈ 12.57
12.57 ÷ 2 = 6.285
10 - 2 = 8
8 · 4 ÷ 2
32 ÷ 2
16
2 · 4 = 8
6.285 + 8 + 16
30.285
 
        
             
        
        
        
Answer:
4/8 - 2/8 = 2/8 = 1/4 
Step-by-step explanation:
 
        
                    
             
        
        
        
Use the depreciation formula.

Where 'p' is the principal value, 'r' is the rate it depreciates, and 'n' is the time. Just plug in what we know:

Simplify by subtracting:

Simplify the exponent:

Multiply:
