Discover the best answers at Westonci.ca, where experts share their insights and knowledge with you. Join our Q&A platform to get precise answers from experts in diverse fields and enhance your understanding. Join our platform to connect with experts ready to provide precise answers to your questions in different areas.

To find the average rate (speed) of a car traveling on a highway, the distance traveler is divided by the time: R=D/T. If the distance is D=36/x^2-36 miles and the time is T=6x^2+6x/x^2+7x+6 hours, find a simplified expression for the average rate of the car.
a) 1/x
b) 6/x-6
c) 6/x^2-6x
d) 1/x^2-6x


Sagot :

Answer:

It's C

Step-by-step explanation:

Just took the quiz and got it right.

The average rate (speed) of a car traveling on a highway, the distance traveler is divided by the time: R=D/T would be c) 6/x^2-6x.

How to find the average rate of change of something?

Let the thing that is changing be y and the thing with which the rate is being compared is x,

then we have the average rate of change of y as x changes as:

[tex]\text{Average rate} = \dfrac{y_2 - y_1}{x_2 - x_1}[/tex]

where when

[tex]x = x_1, y = y_1\\and \\x = x_2, y = y_2[/tex]

The distance traveler is divided by the time: R=D/T.

If the distance is  [tex]D=\dfrac{36}{x^2}-36[/tex]miles

the time is  [tex]T=6x^2+\dfrac{6x}{x^2}+7x+6\: hours,[/tex]

The average speed of a car traveling = Distance / Time

= [tex]\dfrac{\dfrac{36}{x^2}-36}{6x^2+\dfrac{6x}{x^2}+7x+6}[/tex]

= [tex]\dfrac{{36}-36{x^2}}{6x^4+{6x}+7{x^3}+6{x^2}}[/tex]

= [tex]\dfrac{6}{x^2}-6x[/tex]

Learn more about speed;

https://brainly.com/question/14297576

#SPJ2