Respuesta :

Do 3.75÷.75=5

You will end up getting 5, which is 5 miles per hour.

Hope this helped!!

Answer:

His average speed in miles per hour is:

                        5 miles per hour.

Step-by-step explanation:

We know that the average speed is the ratio of the distance over time.

i.e.

[tex]\text{Average speed}=\dfrac{\text{Distance}}{\text{Time}}[/tex]

Here we have:

Chen rode his skateboard 3 3/4 miles in 3/4 of an hour.

Distance traveled is:

[tex]3\dfrac{3}{4}=\dfrac{15}{4}\ \text{miles}[/tex]

and the time taken is:

[tex]=\dfrac{3}{4}\ \text{hour}[/tex]

Hence,

[tex]\text{Average speed}=\dfrac{\dfrac{15}{4}}{\dfrac{3}{4}}[/tex]

i.e.

[tex]\text{Average speed}=5\ \text{miles per hour}[/tex]