Question

the half - life of a particular radioactive substance is 3 years. if you started with 60 grams of this substance, how much of it would remain after 6 years? remaining amount = 60(1 - 0.50)^2 remaining amount = ? grams round your answer to the nearest whole number

Explanation:

Step1: Calculate the value inside the parentheses

$1 - 0.50=0.50$

Step2: Calculate the square of the result

$0.50^2 = 0.25$

Step3: Multiply by the initial amount

$60\times0.25 = 15$

Answer:

15