Answer: 0.6827
Step-by-step explanation:
Given : Mean IQ score : 
Standard deviation : 
We assume that adults have IQ scores that are normally distributed .
Let x be the random variable that represents the IQ score of adults .
z-score : 
For x= 90

For x= 120

By using the standard normal distribution table , we have
The p-value : 

Hence, the probability that a randomly selected adult has an IQ between 90 and 120 =0.6827
There is no solution because when you distribute the 6 on the right side you get
6x+18
So the equation is
6x-9=6x+18
This is unsolvable because x must be the same on both sides, so there are no solutions
Answer:
The answer is C. O.19 on ed.
Step-by-step explanation:
I took the test and got it right
Answer:
The answer is D (last bullet)
Answer:
its 18
Step-by-step explanation:
i took this testtttttttttttt