An element with mass 640 grams decays by 7.3% per minute. How much of the element is remaining after 8 minutes, to the nearest 1
0th of a gram?
2 answers:
Answer: 349.0 gms.
Step-by-step explanation:
The exponential decay equation is given by :-
, where A= Initial value , r = rate of decay in decimal and t is time.
As per given , we have
A= 640 gm
r= 7.3%=0.073
Then , our decay function will become :-

At t= 8 minutes, we have

Hence, after 8 minutes , the remaining amount of element = 349.0 gms.
Answer:
349.0 grams to nearest tenth
Step-by-step explanation:
After each minute there will be (100- 7.3) = 92.7 % ( or 0.927) of the element left.
Therefore after 8 minutes amount left = 640*0.927^8
= 349.0 grams answer
You might be interested in
-90 -45 -30 -18 -15 -10 -6 -5 -3 -2 -1
If
1 ton = 2,000 points
8 tons = (2,000) 8 pounds
= 16,000 pounds
Hope you find this helpful!
Brainliest and a like is much appreciated!
12% = 0.12
90% = 0.9
Domain:
{-4, -2, -1 , 1, 4}
Hope it helps
Answer:
11 units i think
Step-by-step explanation: