Answer:
138.3
Step-by-step explanation:
Answer:
Third option.
Step-by-step explanation:
You need to remember that the formula used to calculate the arc lenght is:

Where "r" is the radius and "C" is the central angle in radians.
You need to solve for "C":
You know the radius and the arc lenght, therefore, you can substitute values to calculate the central angle in radians. Therefore, this is:

Multiply 2/3 by 8 and you will get 16/3 or 5.33 repeating.
y=10+x(0.5)
This is the way of writing that equation.
Bill and Amy travel the same distance from home to school of 14.4 kilometers. Amy takes 40 minutes of time to arrive to school which means she has a rate of 14.4 km /40 minutes or 6 meters/ second. Bill takes a total 60 minutes to arrive to school. Hence Bill's rate is equal to 14.4 km/60 minutes or 4 meters/ second.Amy's is 2 m/s faster than Bill's speed, then.