Answer:
X = {0, 1, 2, 3, 4}
Step-by-step explanation:
If X is the number of nonzero digits in a 4-digit PIN with no restriction on the digits, the pin can have up to 4 nonzero digits.
Let's see some examples:
If the PIN is 0000 then X = 4
If the PIN is 2045 then X = 3
If the PIN is 7546 then X = 0
From the previous examples, we can see that the possible values for X are 0, 1, 2, 3, 4.
Thus X = {0, 1, 2, 3, 4}
No. Solve each of the problems and see if they match. Do PEMDAS order of operations
Answer: 2 11/24
Step-by-step explanation:
How many hours does the plane save?
Time taken for the train = 5 1/8
Time taken for the plane = 2 2/3
The number of hours saved will then be:
= 5 1/8 - 2 2/3
Let the lowest common multiple be 24
= 5 3/24 - 2 16/24
= 2 11/24
The number of hours saved by the plane will be 2 11/24
The value of 13 weeks in seconds is 7862400 seconds
<h3>Conversion of weeks to seconds</h3>
In order to convert weeks to seconds, we will use the following conversion factor
1week = 7 days
13weeks = 91days
<u>Convert days to hours</u>
Since 24 hours = 1 day, then;
91 days = (91*24)
91 days = 2184 hours
Convert hours to seconds
1 hour = 3600secs
Hence 2184 hours = (2184*3600)
2184 hours = 78624000 seconds
Hence the value of 13 weeks in seconds is 7862400 seconds
Learn more on conversion on weeks to seconds here: brainly.com/question/11947673
#SPJ1
