D. (S. 15
10. The average velocity of a car is 54km/h. What is
the distance covered if the time taken is 10s
A. 200m B. 150m C. 100m D. 50m E.

B. 150 m

Explanation:

In order to answer the question, it is important to know the formula for "velocity."

velocity =

What is being asked? The distance covered if the time taken is 10 sec.

So this means: velocity x  time = distance

Step 1: Convert 10 sec. to hour.

10 sec. x = 0.00278 hr.

Step 2: Plug in the values to the formula.

distance = 54 x 0.00278 hr.

distance = 0.150 km

Step 3: The choices are in meters (m), so let's convert 0.150 km to meter.

0.150 km x = 150 meters

The answer is: 150 m

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .