The definition of a system is a set of rules, an arrangement of things, or a group of related things that work toward a common goal. An example of a system are the laws and procedures of a democratic government. An example of a system is the way someone organizes their closet.
Step-by-step explanation:
distance must be given
average speed is distance and time
Answer:
Step-by-step explanation:
I assume you need help with the first picture:
Let 
Then
Clearly you can see that the sum of 2 rational numbers gives a rational number.
The exact form will be 3/2 (if you reduce, how many times will one go into three? three times, two will go into 4 twice so that is one way to get the answer.) Decimal form is 1.5 and the mixed number form will be one and one half (or 1 1/2)
First add 11 and 4 because you need to know how many he had in total 11+4=15 then divide 15 by 3 and then you have you answer 15/3=5.
There are 5 model cars in each pack.
