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
Point distance formula:
d=√((x_2-x_1)²+(y_2-y_1)²)
Substitute
d=√((3-(-3))²+(2-(-1)²)
Simplify
d=√((6)²+(3)²)
d=√(36+9)
d=√(45)
<h2><u><em>
d=3√(5)</em></u></h2>
<u><em></em></u>
-Hunter
Answer:
0.6 miles per hours per hour
Step-by-step explanation:
Simply divide 5 by 8
your answer: 0.6 miles per hour.
Answer:
Ok im using a standered form calculator:
1. 9/7x + 1/7 = -8
2. y = -6/5x - 3 = -11
3. y = 1/3x - 2 = -10
Step-by-step explanation:
I will be glad to help more
4.3125 is the answer to that equation
