Mathematics: The amount of radioactive element remaining, r, in a 100-mg sample after d days is represented using the equation r=100(1/2)^d/5. what is the daily percent of decrease? a. 87.06% b. 12.94% c. 3.13% d. 10%

The amount of radioactive element remaining, r, in

Ответ:

jonestheproblem5029

11.01.2022

The equation is
R=100(1/2)^(d/5)
After one day the remaining is
R=100×(1÷2)^(1÷5)
R=87.06 remaining

It decreased by 12.94 (100−87.06)
So the daily percent of decreases is 12.94%

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Ответ:

dontcareanyonemo

07.08.2020

Mathematics

602.88

Step-by-step explanation:

$V=\pi R^2\cdot H\\R=3\\H=12\\\\V=??\\\\V=\pi\cdot4^2\cdot 12\\\\V=162\pi\approx 602.88$

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The amount of radioactive element remaining, r, in a 100-mg sample after d days is represented using the equation r=100(1/2)^d/5. what is the daily percent of decrease?

a. 87.06%
b. 12.94%
c. 3.13%
d. 10%

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