In order to help explain how you came to your answer. It also helps when marking or reviewing because it's easier to find any mistakes
Answer: X=16
Explanation: when you plug in -7 for x in the equation you have and just multiply it by -3 you will get 21 then subtract 5 and that will give yo 16
Answer:
four thousand three hundred and four
Step-by-step explanation:
<u>Given</u>:
A map shows some cities in the northern United States. The scale of a map is 
The actual distance between Chicago, IL and Pittsburgh, PA is 375 miles.
We need to determine the distance between the two cities on the map.
<u>Distance between the two cities:</u>
The distance between the two cities on the map can be determined by dividing the actual distance by 125 miles.
Thus, we have;

Dividing the terms, we get;

Thus, the distance between the two cities on the map is 3 inch.
Solution :
a). The probability that the student will
the 1st question after the 4th attempt.
P (correct in the 4th attempt)
= 
= 0.01171875
b). The probability that the student will
3 questions after 10 total attempts.
P( X = 3) for X = B in (n = 10, p = 0.75)
= 
= 0.0031
c). The mean and the standard deviation for the number of attempts up to when the students gets all the questions correct is :
There are = 6 success, p = 0.75.
Therefore, this is a case of a negative binomial distribution.


= 8
So, 

= 1.6330