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shusha [124]
3 years ago
14

A schools running track is 200m long (in an oval shape). How many times must a runner go around the track to run 1.6km?

Mathematics
2 answers:
LUCKY_DIMON [66]3 years ago
8 0

It is 8 laps (I think)

Dafna11 [192]3 years ago
5 0

Answer:

the track is 200 meters so I would say divide and you should get your awswer

Step-by-step explanation:

divide because it says "how many times must a runner go along the track to run 1.6km?"

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L_x=10+10\lambda x=0\implies1+\lambda x=0

L_y=10+10\lambda y=0\implies1+\lambda y=0

L_z=2+4\lambda z=0\implies1+2\lambda z=0

L_\lambda=5x^2+5y^2+2z^2-42=0

\begin{cases}L_x=0\\L_y=0\\L_z=0\end{cases}\implies1+\lambda x=1+\lambda y=1+2\lambda z=0\implies x=y=2z

5x^2+5y^2+2z^2=5(2z)^2+5(2z)^2+2z^2=42z^2=42\implies z^2=1

z^2=1\implies z=\pm1\implies x=y=\pm2

There are two critical points, at which we have

f\left(2,2,1\right)=42\text{ (a maximum value)}

f\left(-2,-2,-1\right)=-42\text{ (a minimum value)}

3 0
3 years ago
The correlation coefficient for the ages of drivers in a driver safety class and the number of traffic violations they have rece
Doss [256]
A correlation coefficient is always a value in between -1 and 1
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The coefficient -0.61 shows a strong negative correlation
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3 years ago
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<u>Step-by-step explanation:</u>

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I wanna say its 16
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ale4655 [162]
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