
Explanation

Step 1
multiplicate by the conjugate

notice that


I hope this helsp you
9 ft is the answer because a square has four sides, so 36 divided by 4 is 9
30 I believe, sorry if I am wrong, I am bad at math and history.
Answer:
The answer is below
Step-by-step explanation:
Let Y represent the profit per day, and x represent the number of bar sold per day. Hence:
Y = 0.25x - 2
a) The mean is given as:

b) The standard deviation of y is:

Answer:
the set of whole number since it is defined as positive integers + zero