Answer:
C: (2x-10)
Step-by-step explanation:
(4x - 3) - (2x + 7)
In -(2x+7), think of it as -1(2x+7) which is equal to:
-1*2x + -1*7 =
-2x - 7
Now we add this to 4x-3
4x - 3 - 2x - 7
Combining like terms gives us:
2x - 10
Answer is D. Not too sure, but I believe it's D.
Because they do not cross each other and never will cross.
Answer: 0.7619
Step-by-step explanation:
Given : Mean :
Standard deviation :
Sample size :
We assume that the variable is normally distributed.
The value of z-score is given by :-
a) For x= 46.9 years
The p-value :
Hence, the probability that the average age of those doctors is less than 46.9 years =0.7619