I think you have to find the value of x and y before u can simplify it.
Answer:
Step-by-step explanation:
observe by factorization and cancelation
X=12
36 + 12 = 48
48/4 = 12
Answer:
About 68% (is that an answer choice?)
Step-by-step explanation:
In a normal distribution (a bell curve), about 68 percent of the data is in the range between one standard deviation below the mean to one standard deviation above. If your mean is 27, and the standard deviation is 3, then one deviation below to one above would be 27 - 3 to 27 + 3, or 24 - 30.
