9.83
Explanation: 6+8+10+10+12+13 = 59
There are 6 numbers so 59 divided by 6 is equal to 9.833… simplified it would be 9.83
Answer:
Answer:1.5*10^9 years
Step-by-step explanation:
The half life of the substance is given i.e 4.5B years. You can change it into seconds by multiplying it with 365 and 86400.
The current no of particles is given 78.88% which will be equal to 78.88 if you assume the substance had 100 no of particle initially.
Determine the decay constant by dividing 0.69 by half life
use these values in the equation for the answer.
[ln and e are inverse functions to eachother]
I hope this helps you
length 2w+3
width w
Perimeter=2 (width+length)
30=2 (w+2w+3)
15=3w+3
3w=12
w=4
2w+3=2.4+3=11
You would need a total of 600 feet to cover your area
Then divide by 5 for every 5 feet answer would be 120 posts.
