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Sagot :
The number of hours he spent playing the game between 12:00 noon and 6:00 P.M. on that day will be 3.5 hours.
What is the linear system?
A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.
David's phone battery level drops 6 percentage points each hour when he is not playing a game on it.
When David does play a game on his phone, the phone battery level drops 18 percentage points each hour.
On a particular day, the phone battery level was at 100 percentage points at 12:00 noon and at 22 percentage points at 6:00 P.M.
If David did not charge his phone during this time.
Then the number of hours he spent playing the game between 12:00 noon and 6:00 P.M. on that day will be
Let x be the number of no gaming hours and y be the number of gaming hours.
Then the equation will be
6x + 18y = 100 - 22
6x + 18y = 78
x + 3y = 13 ...1
x + y = 6 ...2
By solving the equations 1 and 2, we have
x = 2.5 hours and y = 3.5 hours
More about the linear system link is given below.
https://brainly.com/question/20379472
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