The difference between the means is about 5 times
Answer:
y=5/2x+6
Step-by-step explanation:
Answer:
Klorina's rate in still water is 4.5 km/h
Current's rate is 0.5 km/h
Step-by-step explanation:
Let
x km/h = Klorina's rate in still water
y km/h = current's rate
<u>With the current (current helps):</u>
Distance = 10 km
Time = 2 hours
Rate = x + y km/h
![10=2(x+y)](https://tex.z-dn.net/?f=10%3D2%28x%2By%29)
<u>Against the current:</u>
Distance = 8 km
Time = 2 hours
Rate = x - y km/h
![8=2(x-y)](https://tex.z-dn.net/?f=8%3D2%28x-y%29)
Divide both equations by 2:
![x+y=5\\ \\x-y=4](https://tex.z-dn.net/?f=x%2By%3D5%5C%5C%20%5C%5Cx-y%3D4)
Add these equations:
![x+y+x-y=5+4\\ \\2x=9\\ \\x=4.5\ km/h](https://tex.z-dn.net/?f=x%2By%2Bx-y%3D5%2B4%5C%5C%20%5C%5C2x%3D9%5C%5C%20%5C%5Cx%3D4.5%5C%20km%2Fh)
Subtract these two equations:
![(x+y)-(x-y)=5-4\\ \\x+y-x+y=1\\ \\2y=1\\ \\y=0.5\ km/h](https://tex.z-dn.net/?f=%28x%2By%29-%28x-y%29%3D5-4%5C%5C%20%5C%5Cx%2By-x%2By%3D1%5C%5C%20%5C%5C2y%3D1%5C%5C%20%5C%5Cy%3D0.5%5C%20km%2Fh)
Answer:
![(3y+5)(9y^{2} -15y+25)](https://tex.z-dn.net/?f=%283y%2B5%29%289y%5E%7B2%7D%20-15y%2B25%29)
Step-by-step explanation:
The answer would be
4d+2.75p=12