<span>The diameter of the Moon is 3,474 km. Now, let's compare this to the Earth. The diameter of the Earth is 12,742 km. This means that the Moon is approximately 27% the size of the Earth.</span>
%d is a format specifier that is a placeholder for an int value. It tells the compiler that we want to print an integer value that is present in variable a. In this way there are several format specifiers in c.
Answer:
The minimum time to get the car under max. speed limit of 79 km/h is 2.11 seconds.
Explanation:

isolating "t" from this equation:

Where:
a=
(negative because is decelerating)

First we must convert velocity from km/h to m/s to be consistent with units.


So;

Explanation:
Given that,
The time taken from A to B is 3 hours
The time from B to A = 5 hours
The total distance between A and B is 150 miles
The average velocity from A to B,

The average velocity from B to A,

As the velocity of an object is a vector quantity. It means when the car reaches the initial point, the displacement is 0. So, the average velocity is equal to 0.