Answer:
D. A random sample
Step-by-step explanation:
The answer to your question is D. A random sample because this sampling type is people being randomly selected from the population. We can also rule out the other options because of the following reasoning:
[✗] A. A convenience sample
-> This is a good contender, but as she is not asking everyone and the sample is <em>for</em> the school, it would not make sense to ask people near her house for example, we can say that this probably is not the best option.
[✗] B. A self-selected sample
-> This type is more like a poll, people volunteer for a self-selected sample, while here they are being asked
[✗] C. A systematic sample
-> Every so often she is asking students questions, she does not have a set number of how often or of the population (that we know of)
[✓] D. A random sample
-> This option is correct as stated above. She is randomly picking people.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
Answer:
it adds $9.60 to the amount
Step-by-step explanation:
http://www.mathopenref.com/coordintro.html
http://www.cpalms.org/Public/PreviewResourceAssessment/Preview/70464
Answer: Infinitely Many Solutions
Step-by-step explanation is below.
34x+95=3(14x+9)
We move all terms to the left:
34x+95-(3(14x+9))=0
We calculate terms in parentheses: -(3(14x+9)), so:
3(14x+9)
We multiply parentheses
42x+27
Back to the equation:
-(42x+27)
We get rid of parentheses
34x-42x-27+95=0
We add all the numbers together, and all the variables
-8x+68=0
We move all terms containing x to the left, all other terms to the right
-8x=-68
x=-68/-8
x=8+1/2