Answer:
609
Step-by-step explanation:
Standard deviation = 
= $30
Margin of error = E = $2
Confidence level = 90%
Since the distribution is said to be normal, we will use z scores to solve this problem.
The z score for 90% confidence level = z = 1.645
Sample size= n = ?
The formula to calculate the margin of error is:
Using the values in above equation, we get:
This means, the minimum number of observations required is 609
9/16
Decimal form - 0.5625
You welcome :)
Answer:
Circular one
Step-by-step explanation:
It really depends on how you cut it, but circles are just one big edge that's curved to meet up with itself.
Also, corners aren't edges and rectangles have corners.
Go with the circle one
Answer:
18/24 for the first one
Step-by-step explanation:
The discontinuity occurs at x = 0, since that is the only "problem" place in the graph that makes the function undefined. A vertical asymptote exists there. It is nonremoveable.
