Answer:
95
Step-by-step explanation:
If the mean is 400 and the standard deviation 12.5. It means that a range between 375 and 425 is the mean +- 2 standard deviations
400 - 12.5*2 = 375
400 + 12.5*2 = 425
Which means the probability is 95%
When you are looking for +- 1 deviation standard the probability is 68, and for +- 3 the probability is 99.7
There is a more complex explanation based on Z, but assuming you are only applying 68-95-99.7 rule this should be enough.
y=2x+7
y=2x-7
parallel lines always have the same slope but different y intercepts. y=2x+7 and y=2x-7 is the only possible answer because it's the only one with the same slope
Parallel. The two equations have the same slope, 3, which makes them parallel.
Answer:
The answer is C an X should only equate to one result value
Step-by-step explanation:
Answer:
Step-by-step explanation:
Hello
(x-p)^2=p (I don’t understand)
-9+12x-6x^2=0
6x^2 - 12x + 9 = 0
3(2x^2 - 4x + 3) = 0
2x^2 - 4x + 3 = 0
< 0 so no solutions
