Answer: it will take him 4.5 hours to cover same distance
Step-by-step explanation:
Marathon runner covered the whole distance in 4 hours running at a constant speed of 8.1 km per hour.
Speed = distance / time
Distance = speed×time
Therefore, distance covered by the marathon runner in in 4 hours, running at a speed of 8.1 km per hour is
8.1 × 4 = 32.4 kilometers
if he decreased the speed to 7.2 km per hour, the distance remains 32.4 kilometers. Therefore,
At 7.2 km per hour, the time it would take him to cover the same distance would be
Distance/ speed = 32.4/7.2 = 4.5 hours
All you need to do is divide 0.6 into both sides.
10.3/0.6= 17.166666666667 ( you could round up to 17.2)
I hope this helps!
~cupcake
If I'm right it could be C. IF I'M RIGHT, I'm not totally sure but I hope this helps.
Answer: 637
Step-by-step explanation:
Follow the
Symbols like a divide
Answer:
y = 40
x = 70
Step-by-step explanation:
y = tan39° × 57
y = 46,16
y = 40
x= 57/ cos39°
x= 73,35
x =70
