the average human breathes approximately 12 times per minute. it would take approximately how many minutes to breathe one billio
2 answers:
Answer:
83,333,333.3 minutes
Step-by-step explanation:
The average human breaths per minute approximately = 12 times
We have to calculate the time of breathing one billion times.
So we will divide one billion by 12.
Time taken to breath one billion times =
= 83,333,333.3 minutes
It will take 83,333,333.3 minutes to breath one billion times.
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Answer:
a.
b. The value of stereo system after 2 years will be $628.23.
c. After approximately 4.98 years the stereo will be worth half the original value.
Step-by-step explanation:
Let x be the number of years.
We have been given that you purchased a stereo system for $830. The value of the stereo system decreases 13% each year.
a. Since we know that an exponential function is in form: , where,
a = Initial value,
b = For decay b is in form (1-r), where r is rate in decimal form.
Let us convert our given rate in decimal form.
Upon substituting our given values in exponential decay function we will get
Therefore, the exponential model represents the value of the stereo system in terms of the number of years since the purchase.
b. To find the value of stereo system after 2 years we will substitute x=2 in our model.
Therefore, the value of stereo system after 2 years will be $628.23.
c. The half of the original price will be .
Let us substitute y=415 in our model to find the time it will take the stereo to be worth half the original value.
Upon dividing both sides of our equation by 830 we will get,
Let us take natural log of both sides of our equation.
Using natural log property we will get,
Therefore, after approximately 4.98 years the stereo will be worth half the original value.
The easy answer: If, say, B is the zero matrix, i.e.
then