T=72÷r
T=72÷6.6
T=10.9 years round your answer to get 11 years
The balance hits 3900 in
1,970+11 years=1,981
Since you already know that the first 50 meters took 1min you can subtract
400meters-50meters=350meters
350meters÷50meters=7minutes
It increases at 12 sec./min for 7mins
1.12,1.24,1.36,1.48,2.00,2.12,2.24= 11.56+1.00=12.56min
Answer:
4
6
8
9
10
12
14
Step-by-step explanation:
any number that is not a prime number
