An element with mass 570 grams decays by 18% per minute. How much of the element is remaining after 13 minutes,to the nearest 10
th of a gram?
1 answer:
Answer:
43.2 grams
Step-by-step explanation:
A = P (1 + r)^t
where A is the final amount,
P is the initial amount,
r is the rate of growth or decay,
and t is time.
Given:
P = 570
r = -0.18
t = 13
A = 570 (1 − 0.18)^13
A = 43.2
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