contestada

A motorboat heads upstream a distance of 24 miles on the Guadalupe River, whose current is flowing at 3 miles/hour. Which expression can represent the total time it takes to complete a round-trip up and back, where b is the speed of the boat in miles/hour?

Respuesta :

Answer:

24/b-3 + 24/b+3

Step-by-step explanation:

For PLATO users!!!!

This expression represents the total time, Time = [tex]\frac{24}{b-3} + \frac{24}{b+3}[/tex]

What is distance?

Distance is defined as the product of the speed and time.

Given,

b = the speed of the boat in miles/hour

let,  effective speed upstream = (b+3)

effective speed downstream = (b-3)

∵Time = distance/ speed

Given that, upstream a distance of 24 miles

Time = [tex]\frac{24}{b-3} + \frac{24}{b+3}[/tex]

This expression represents the total time it takes to complete a round-trip up and back.

Learn more about distance

https://brainly.com/question/13269893

#SPJ2

Otras preguntas