Answer:
1) biased sample
2) random sampling
Step-by-step explanation:
Since the results are based on feedback of students in only one class, it's not a good representative of the entire student body.
Also, since it's a math class there will be a bias.
Better method would be randomly selecting students from the entire school students list and take their feedback
It took 32 minutes for Ella to go to school on Friday.
Step-by-step explanation:
Time for first four days in minutes,
30,28,34,31
Let x be the time on Friday
Average = 31 min
As we know
Multiplying both sides by 5;
It took 32 minutes for Ella to go to school on Friday.
Keywords: Average, Addition
Learn more about addition at:
#LearnwithBrainly
Answer:
the third one
Step-by-step explanation:
The line passes through the point
It's called the swapping of domain and range. Even without solving for the inverse function just yet, I can easily identify its domain and range using the information from the graph of the original function: domain is x ≥ 2 and range is y ≥ 0.
<u>Answer:</u>
The range of the amount Veronica makes each hour if she can only work a total of 8 hours is 20 ≤ x ≤ 29.55
<u>Solution:
</u>
Let us assume that Veronica worked x hours
The starting pay is
Each hour increase is
So the function is
Now if she works 8 hours, she will earn,
So, the range will be 20 ≤ x ≤ 29.55