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2 years ago

in 25 minutes, li can run 10 laps around the track. Determine the number of laps she can run per minute

Mathematics

2 answers:

ratelena [41]2 years ago

8 0

Answer:

2.5

Step-by-step explanation:

You divide 25 miutes into 10 laps to figure out the laps she can run per minute.

FinnZ [79.3K]2 years ago

6 0

Answer:

I'm not helping yall learn on ya own .

Step-by-step explanation:

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2 years ago

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aleksandr82 [10.1K]

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2 years ago

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Nezavi [6.7K]

$7(x-3)^2-4(x-3)-3\\\\substitute\ t=x-3,\ then\ we\ have\\\\7t^2-4t-3\\\\a=7;\ b=-4;\ c=-3\\\\\Delta=b^2-4ac\\\\\Delta=(-4)^2-4\cdot7\cdot(-3)=16+84=100\\\\t_1=\dfrac{-b-\sqrt\Delta}{2a};\ t_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{100}=10\\\\t_1=\dfrac{-(-4)-10}{2\cdot7}=\dfrac{4-10}{14}=\dfrac{-6}{14}=-\dfrac{3}{7}\\\\t_2=\dfrac{-(-4)+10}{2\cdot7}=\dfrac{4+10}{14}=\dfrac{14}{14}=1\\\\7t^2-4t-3=7\left(t+\dfrac{3}{7}\right)(t-1)=(7t+3)(t-1)\\\\=(7(x-3)+3)(x-3-1)=(7x-21+3)(x-4)\\\\=\boxed{(7x-18)(x-4)}$

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2 years ago

in 25 minutes, li can run 10 laps around the track. Determine the number of laps she can run per minute​

in 25 minutes, li can run 10 laps around the track. Determine the number of laps she can run per minute