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Scilla [17]
3 years ago
13

5. Suppose a password requires three distinct letters. Find the number of permutations for the three letters in the code if the

letters may not be repeated.
Mathematics
1 answer:
Roman55 [17]3 years ago
3 0

Answer:

There are 15600 ways to pick a password

Step-by-step explanation:

We have 26 possibilities to pick a letter. So, we have 26 possibilities for the first component of the password. The second letter should be different from the first one, so we have one less possibility, giving us a total of 25, and for the third letter we have 24.

This gives us 26*25*24 = 15600 ways of picking a password.

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Math 8 Unit 8 lesson 1-5
patriot [66]

Can you please comment the questions, we don't know what to do.

8 0
3 years ago
How do you divide -5.2 by 3.9? (step by step) please my test is tomorrow
Arte-miy333 [17]
I would suggest converting to fractions. -5.2 is equal to -52/10, and 3.9 is equal to 39/10. To divide -52/10 by 39/10, multiply -52/10 by the reciprocal of 39/10 (which is 10/39).
So you would set this up like:
-52      10
----- x ----- =
10       39

cancel out the 10s. just divide-52 by 39, and you have your answer. 
or divide 52 by 39, just know that the answer will be negative.
52/39=1.33, or 4/3, or 1 1/3.
3 0
3 years ago
Point x is at 2/3 on number line. On the same number line point y is the same distance from 0 as point x but has a numberator of
Yanka [14]

Answer:  The answer is 12.

Step-by-step explanation: Given that a point 'x' is lying at \dfrac{2}{3} on the number line. Another point 'y' is also lying at the same distance from 0 but has a numerator of 8. We are to find the denominator of 'y'.

Since 'x' is lying at \dfrac{2}{3} on the number line so its distance from 0 will be

d_x=\dfrac{2}{3}-0=\dfrac{2}{3}.

Let the denominator of 'y' be p, then its distance from 0 will be

d_y=\dfrac{8}{p}-0=\dfrac{8}{p}.

According to the given information, we must have

d_x=d_y\\\\\\\Rightarrow \dfrac{2}{3}=\dfrac{8}{p}\\\\\\\Rightarrow p=\dfrac{8\times 3}{2}=12.

Thus, the denominator will be 12.

4 0
3 years ago
Melons cost $.56 per pound how many pounds can be bought with $5.60
Reptile [31]
You can buy 10 pounds of melons
5 0
3 years ago
A man does not eat for. One week how many hours is that
Artist 52 [7]

Answer:

1 week = 168 hours

Step-by-step explanation:

1 week = 7 days

1 day = 24 hours

1 week * 7 days/ 1 week * 24 hours/1 day = 168 hours

So 1 week = 168 hours

8 0
3 years ago
Read 2 more answers
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