Answer:
Step-by-step explanation:
Given that the random variable X is normally distributed, with
mean = 50 and standard deviation = 7.
Then we have z= 
Using this and normal table we find that
a) 
b) When z=0.02
we get

c) 90th percentile z value =1.645
90th percentile of X 
Yes. Your answer is correct
The answer is B. If -0.8 was below the other number, the other number would be above it.
Answer:
A
Step-by-step explanation:
272/64 = 4.25
4.25*48 = 204
Answer: (0,-4)
explanation: write in vertex form and use this form to find the vertex ( h , k )