Answer:
t3 = 8, t5 = 14
Step-by-step explanation:
t3 = 2 + (3-1) × 3
t3 = 2 + (2) × 3
t3 = 2 + 6
t3 = 8
t5 = 2 + (5-1) × 3
t5 = 2 + (4) × 3
t5 = 2 + 12
t5 = 14
The mass of radioactive material remaining after 50 years would be 48.79 kilograms
<h3>How to determine the amount</h3>
It is important to note that half - life is the time it takes for the amount of a substance to reduce by half its original size.
Given the radioactive decay formula as
m(t)=120e−0.018t
Where
t= 50 years
m(t) is the remaining amount
Substitute the value of t


Find the exponential value
m(t) = 48.788399
m(t) = 48.79 kilograms to 2 decimal places
Thus, the mass of radioactive material remaining after 50 years would be 48.79 kilograms
Learn more about half-life here:
brainly.com/question/26148784
#SPJ1
<span>The video last for about 6.44 minutes. Rounded to the
nearest minutes
=> So let’s simplify the given equation
=> 6.44 minutes in where 6 = minutes, 44 = seconds.
Now, we have our minute’s value which is 6, let us start the rounding
=> 6.44, the number that follows the 6 is a decimal number which is 4.
4 is below 5, so we need to follow the rounding rule. This will round down.
=> 6 minutes
Therefore, the video lasts for about 6 minutes.
</span>
Answer:
True
Step-by-step explanation: