We can compare by converting Johnny's reading time into the same unit of Jacky's, hours.
There are 60 minutes in an hour, so use this:
![\frac{1}{3} * \frac{60}{1} = 20](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B3%7D%20%2A%20%20%5Cfrac%7B60%7D%7B1%7D%20%3D%2020)
15 < 20, so Johnny read faster. This is 5 pages faster per hour than Jacky.
If we have 2 coordinates say: (x1,y1) and (x2,y2)
Then the formula for the midpoint is:
((x1+x2)/2,(y1+y2)/2)
And the formula for the distance is:
Sqrt((x2-x1)^2+(y2-y1)^2)
So here we have (-1,-4) and (-7,4)
The midpoint is:
((-1+-7)/2,(-4+4)/2) = (-8/2,0/2) = (-4,0)
The distance is:
Sqrt((-7- -1)^2+(4- -4)^2)
= sqrt((-6^2)+(8^2))
=sqrt(36+64)
=sqrt(100)
=10
Step-by-step explanation:
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Answer:
D!
Step-by-step explanation: