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Lunna [17]
2 years ago
6

An element with mass 310 grams decays by 5.7% per minute. How much of the element is remaining after 9 minutes, to the nearest 1

0th of a gram?
Mathematics
1 answer:
katen-ka-za [31]2 years ago
8 0
1st
I need to find out what percentage is left after 1 minute
100 - 5.7 = 94.3% (0.943)

2nd plug into the formula A =  A_{0}  r^{t}

A0 = 310
r = 0.943
t = 9

A = 310(0.943)^{9} \\ A = 310(0.58966) \\ A = 182.8 g
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