Answer:
x=7
Step-by-step explanation:
3(7) - 4=17
21-4=17
It’s should be the first one
Answer:
Less than 264.44 days would be for the shortest 20%
Step-by-step explanation:
Given that X, the length of a human pregnancy is normally distributed with a mean of 272 days with a standard deviation of 9 days (Bhat & Kushtagi, 2006).
X is N(272, 9)
Corresponding Z score would be for any x

We have to find out the shortest 20%
Corresponding z score i.e. z score 20th percentile is given by
-0.84
corresponding x score is

Less than 264.44 days would be for the shortest 20%
Answer:
2 hours
Step-by-step explanation:
Each hour, Sam earns $9
So 2 hours, Sam will earn 2 * $9 = $18
Thus, Sam will earn $18 in 2 hours working at the drugstore.
Answer:
64
Step-by-step explanation:
2:1 ratio
Multiply 32*2