The U.S. Postal Service is to deliver a letter to a certain postal ZIP 4 code. Find the probability that the ZIP 4 code is correct if the sender (a) randomly chooses the code, (b) knows the five-digit code but must randomly choose the last four digits, and (c) knows the five-digit code and the first two digits of the plus 4 code.

StateCityZIP Code(s)

Arizona (AZ)Phoenix85001 thru 85055

Arkansas (AR)Little Rock72201 thru 72217

California (CA)Sacramento Los Angeles Beverly Hills94203 thru 94209 90001 thru 90089 90209 thru 90213

Colorado (CO)Denver80201 thru 80239

Step-by-step explanation:

Hope This Helps

(5,7)

Step-by-step explanation:

The given system of equations are :

6x-2y = 16

or

3x-y = 8 (1)

3x = 15

or

x = 5 ...(2)

Put the value of x in equation (1).

3(5)-y = 8

15-y=8

15-8 = y

y = 7

Put the value of y in equation (1).

3x-7 = 8

3x = 15

x = 5

So, the solution of the given system of equations are x = 5 and y = 7. i.e. (5,7).