Answer:
Option B is correct = 4.082
Step-by-step explanation:
From the question, we have the following information;
Sample A, 60 people are randomly selected = $200 for textbook in one term.
Sample B:, 40 people are randomly selected = $180 for textbook in one term. Standard deviation of sample A and B =$20.
Difference in the average value= 200-180 = 20.
To calculate the standard error we have;
Standard error= SD/√number of sample.
Standard error= 20/√20 = 20/ 4.472
= 4...
Additive inverse is the opposite of the numbers.
So for -2, the opposite is 2, because the opposite of negative is positive
your answer should be 2 - 8i
hope this helps :D
4th Option.
As the number line goes to the right, the higher the number. The only true statement is since R is higher than Q, and the dot is filled in which means greater than or equal, it is option 4
Area=pi r squared
area=3.14 x 10squared
area= 314
the answer is 314
Integers
99, 43, -31, 81, -202, -3
the rest numbers I didn't mention is not integer
