Answer:
Step-by-step explanation:
Before answering we must clearly understand the difference between a statistic and a parameter.
The characteristic of a population is parameter. Example, population mean, population std deviation, population variances are called parameters.
Sample mean, sample std dev, sample variances are called statistics.
Here given that 7 math classes were surveyed and average was calcualted as 83%
Hence only sample mean = 83% and this is hence a statistic
If all 15 math classes surveyed and average taken that would have been the parameter.
For this..all we are doing is adding (w-2) leaving a few options for answers
2(w-2) +2(w-2)
w+w+w+w-2-2-2-2
4(w-2)
The expression would be (5*6)+(5*6)=x
or you could shorten it and do (10*6)=x
To solve this problem you must apply the proccedure shown below:
1. You have the following information given in the problem above:
- The distance is .
- The time is .
2. Therefore, you must divide the distance by the time to calculate the average speed:
The answer is:
For this case we have by definition, that the perimeter of the figure will be given by the sum of its sides, that is:
We add similar terms:
Thus, the correct option is option b. That is,
Answer: