Velocity=distance/time
a=5/(31*60+15)=5/1875=1/375
k=21.1/(2*3600+11*60+52.5)=21.1/7912.5=1/375
a=k
The both ran at the same speed.
(1km/375s)(3600s/h)=9.6km/h

Further explanation:
Given functions are:

In order to find f(x)−g(x), g(x) will be subtracted from f(x)

Hence,

Keywords: Operations on functions, Difference of functions
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Recall the dot-product is just <a,b> • <c,d> => a*c + b*d.
therefore here is just 5*(-8) + 7* 2, or namely -26.
Answer:
40.
Step-by-step explanation:
16 × 2 1/2= X
= 40.
Answer:
B
Step-by-step explanation:
Cuz the other would be a straight line