Kimmy has played video games 24 hours over the last 9 days. She played either 2 hours a day or 3 hours a day. During the 9 day p
2 answers:
Answer:
The number of days when Kimmy play for two hours a day is 3.
Step-by-step explanation:
Let the number of days when Kimmy play for two hours a day be x. So, the number of days when Kimmy play for three hours a day is 9-x.
It is given that Kimmy has played video games 24 hours over the last 9 days.
Subtract 27 from both the sides.
Therefore the number of days when Kimmy play for two hours a day is 3.
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Answer:
begin{aligned}
& x = \frac{D_x}{D} = \frac{-616}{-154} = 4 \\
& y = \frac{D_y}{D} = \frac{ 616}{-154} = -4 \\
& z = \frac{D_z}{D} = \frac{-770}{-154} = 5
\end{aligned}
Step-by-step explanation: