10 Tim finished a 5 km race in 22 minutes and 57 seconds.
Vicky finished the race 1 minute and 28 seconds after Tim.
How long did Vicky take to finish the race?
mins
secs

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

ok then what happened.

english, cause i can’t you

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).