Answer:
It is 20
Step-by-step explanation:
1+1= 2*20=40
40/2=20
The complete question is
<span>Sarah rides her horse for 2 1/6 hrs with a constant speed of 6 km/hr and then for another 2 hours and 5 minutes with a constant speed of 12 km/hr what is her average speed for the total trip?</span>
we know that
speed=distance/time
1) Sarah rides her horse for 2 1/6 hrs with a constant speed of 6 km/hr
time=2 1/6 hrs----> 13/6 hrs
speed=6 km/h
distance=speed*time----> 6*(13/6)---> 13 km
2)for another 2 hours and 5 minutes with a constant speed of 12 km/hr
time=2hrs+5 minutes----> 2+(5/60)--> 125/60 hrs
speed=12 km/hrs
distance=speed*time----> 12*(125/60)---> 25 km
3) find the average speed for the total trip
total distance=13 km+25 km----> 38 km
total time=(13/6)+(125/60)----> (10*13+125)/60----> 4.25 hours
speed=38/4.25----> 8.94 km/hrs
the answer is
8.94 km/hrs
Answer:
5/2 = 2 1/2
15/4 = 3 3/4
33 /8 = 4 1/8
Step-by-step explanation:
5/2 2 goes into 5 2 times with 1 left over = 2 1/2
15 /4 4 goes into 15 3 times with 3 left over 3 3/4
33/8 8 goes into 33 4 times with 1 left over 4 1/8
Answer: -5/2
Step-by-step explanation:
(-9-1)/(4-0) = -10/4 = -5/2
