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Gattuso
04.02.2021 •
Mathematics
As part of a science experiment, a student observes the growth of a population of bacteria in four different media. The table below lists the observations the
student made.
Medium Observation
| Population
increases by
10 every hour
|| Population
decreases by
10 every hour
||| Population
increases by
10% every hour
|V Population
decreases by
10% every hour
In which media can the change in the population of bacteria be modeled by a linear function?
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Ответ:
288
Step-by-step explanation:
First, find how much of the desk each person can finish in 1 hour. Paul can finish 1/12 because he finishes the whole thing in 12 hours and Shawn can finish 1/8 because he finishes the whole thing in 8 hours.
Then find a common denominator and add those together to find how much they could do together in 1 hour.
2/24 + 3/24 = 5/24 So they can finish 5/24 of the desk in 1 hour if they work together.
So to finish 24/24 of the desk, they'll need to do 4 hours (20/24 of the desk) and 48 minutes (4/24 of the desk)
It asked for the number of minutes, so multiply 4 by 60 and add 48 to find the total number of minutes. 4*60 = 240 and 240 + 48 = 288
So it will take them 288 minutes to build the desk together.