HEY PLEASE HELP ME ASAP I NEEEEEED HELP
1 answer:
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Answer with explanation:
Number of Letters from which we have to make four-letter passwords
={A,B,C,D,E,F,G}=7
Since repetition of digit is not allowed.In Permutation order of arrangement is Important,while in combination order of arrangement is not Important.
Out of seven letters we have to select four letters, keeping in mind the order of Alphabets.So, we will use the concept of Permutation.
Number of ways of arrangement,that is to make four letter password from 7 Alphabets
So, total number of ways of making password from 7 alphabets=840 ways
Second Method⇒
Since repetition of alphabets is not allowed, first Alphabet can be chosen in 7 ways , second alphabet can be chosen in 6 ways, third alphabet can be chosen in 5 ways, fourth alphabet can be chosen from four alphabets.
So, total number of ways of making four letter password
=7×6×5×4
= 840 ways
Answer:
Left black
Right black
Blue
Red
Step-by-step explanation:
NOTES:
bold arrow means (less than or equal to OR more than or equal to
thin arrow mean (less than OR more than)
AND you can also put any alphabet to represent unknown
thats it hope this helps :)
This is a rectangle... Did you draw the points?
Find
- the length of the segment going from (-5,0) to (0,-5)
- and the length of the segment from (-20,-15) to (-15,-20).
These are the length and width of the rectangle; multiply both quantities.
The width is found with the formula:
The length is
Find
- the length of the segment going from (-5,0) to (0,-5)
- and the length of the segment from (-20,-15) to (-15,-20).
These are the length and width of the rectangle; multiply both quantities.
The width is found with the formula:
The length is