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1 answer:
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62.5 mg sample will remain after 240 days
Step-by-step explanation:
Given
Half-life = T = 60 days
The formula for calculating the quantity after n half lives is given by:
Here
N is the final amount
N_0 is the initial amount
n is the number of half lives passed
The number of half lives are calculated by dividing the time for which the remaining quantity has to be found by half life
The quantity has to be calculated for 240 days so,
Given
Putting the values in the formula
Hence,
62.5 mg sample will remain after 240 days
Keywords: Half-life, sample
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Answer:
will be the equation that can be used to predict the number of minutes after 4:00 pm she will arrive at her destination.
Step-by-step explanation:
Let x represent the time, in minutes, of her original flight plan.
Let y represents the time, in minutes, of her new flight plan.
The time of Original flight schedule = 4:00 pm
The number of minutes delayed by Original flight = 15 minutes
As the new flight plan is two times faster than original flight plan.
So, the equation of new flight plan will be:
But, the original flight plan was delayed by 15 minutes. Hence, the equation to predict the number of minutes after 4:00 pm she will arrive at her destination will become:
So, will be the equation that can be used to predict the number of minutes after 4:00 pm she will arrive at her destination.
Keywords: equation, problem solving, word problem
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