Respuesta :

marcthemathtutor

Answer:

hence Robert runs at a faster speed

Step-by-step explanation:

1 1/2 hours = 3/2 hours = 1.5 hours

45 min = 45/60 = 3/4 = 0.75 hours

Jacob's speed = 5 miles ÷ 1.5 hours = 3.33 miles/hr

Robert's speed = 3 miles ÷ 0.75 hours = 4 miles/hr

hence Robert runs at a faster speed

nuhulawal20

The speed of Robert is greater than the speed of Jacob, this simply shows that Robert runs faster than Jacob.

What is Speed?

Speed is simply referred to as distance traveled per unit of time.

Speed = distance / time elapsed

Given the data in the question;

  • Distance covered Jacob dJ = 5miles = 8046.72m
  • Time elapsed TJ = 5400s
  • Distance covered Robert dR = 3miles = 4828.03m
  • Time elapsed TR = 2700s

First we determine the speed of Jacob.

Speed of Jacob = 8046.72m / 5400s

Speed of Jacob = 1.49m/s

Next, we determine the speed of Robert.

Speed of Jacob = 4828.03m / 2700s

Speed of Robert = 1.79m/s

The speed of Robert is greater than the speed of Jacob, this simply shows that Robert runs faster than Jacob.

Learn more about speed here: https://brainly.com/question/7359669

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