contestada

A car travels 2 1/3 miles in 3 1/2 minutes at a constant speed. Write an equation to represent the car travels in miles and minutes

Respuesta :

Find the rate at which the car travels.  It is 2 1/3 miles divided by 3 1/2 minutes:

7
--
3
--------- = 2/3 mile per minute.   
7
---
 2

Then y = (distance traveled) = (2/3 mile per minute)x, where x is the number of minutes involved.


Answer:

x = [tex]\frac{2}{3}\times t[/tex]

Step-by-step explanation:

We know the formula to represent the speed is,

Speed = [tex]\frac{\text{Distance}}{\text{Time}}[/tex]

If a car travels the distance = [tex]\frac{7}{3}[/tex] miles in [tex]\frac{7}{2}[/tex] minutes then the speed will be

Speed = [tex]\frac{\frac{7}{3}}{\frac{7}{2}}[/tex]

           = [tex]\frac{7}{3}\times \frac{2}{7}[/tex]

           = [tex]\frac{2}{3}[/tex] miles per minute

If the car travels x miles in t minutes then the equation to calculate the distance will be

[tex]\frac{2}{3}=\frac{x}{t}[/tex]

x = [tex]\frac{2}{3}\times t[/tex]

Therefore, the equation that represents the distance in terms of time will be

x = [tex]\frac{2}{3}\times t[/tex]