1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Marianna [84]
3 years ago
14

A password can be any string of length 7, 8, or 9. Each character in the password can be any capital letter or special character

from the set {*, $, &, #, %}. There are no other restrictions on the password. How many possible different passwords are there?
Mathematics
1 answer:
zavuch27 [327]3 years ago
5 0

Answer:

744

Step-by-step explanation:

The alphabet has 26 letters. Since each character of the password can be a capital letter or one of the four character of the set {*, $, &, #, %}, then each space in the password has 26+5=31 options to select a character.

a) If the password has length 7, then there are 31*7=217 different passwords.

b) If the password has length 8, then there are 31*8=248 different passwords and,

c) if the password has length 9, then there are 31*9=279 different passwords.

Then the total of different passwords is 217+248+279=744.

You might be interested in
Pam works a 52 hours in a week. Considering that a normal work week is 40 hours and paid at $1470 per hour and overtime is paid
Bezzdna [24]

Step-by-step explanation:

they way it is written, she has one of the best paying jobs in the world : $1470 per hour ...

but I guess it is really $14.70 per hour, right ?

that is then her basic wage : $14.70 per hour for 40 hours = 14.7 × 40 = $588.

her overtime rate is then 14.7×1.25 (one time and a quarter) = 18.375 ≈ $18.38

and she gets that rate for all hours beyond the basic 40 hours, so, 52-40 = 12 hours.

12×18.38 = $220.56

or if you need it totally precise

12×18.375 = $220.50

in total, her gross wage for that week is then

588 + 220.56 = $808.56

or totally precise with unrounded hourly rates

588 + 220.5 = $808.50

which would create a mean hourly rate

808.56/52 = $15.54923077... per hour ≈ $15.55 per hour

or

808.5/52 = $15.54807692... per hour ≈ $15.55 per hour

many payroll systems do the rounding of the hourly rates and then calculate the total amount (as the first option here). some others keep the full decimal positions in the calculation and then only round the total (as the second option here).

so, it is the question what your teacher expects here. I cannot tell from the description.

6 0
3 years ago
10 chocolates for $2.30 how much is it for 1 strawberry?
Ivan

Answer:

23 cents (.23)

Step-by-step explanation:

2.30 divided by 10

4 0
3 years ago
(-4^0) + 1 equals to ?​
Mama L [17]

Answer:

zero (0)

Step-by-step explanation:

-4^0=-1

-1+1=0

6 0
2 years ago
How is the product of 3 and 2 shown on a number line?
Bas_tet [7]

Answer:

A

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Find the measure of the indicated angle.
marusya05 [52]

Answer:

the answer is 96°

Step-by-step explanation:

it is an isosceles triangle as it's 2 sides are equal.

for an isosceles triangle, the angles made by the equal sides with the third side are equal.

and the sum of all angles in a triangle = 180°

42 + 42 + x = 180

x = 180 - 84

X = 96°

4 0
3 years ago
Other questions:
  • What is 7.2199 rounded to the nearest thousandth
    5·2 answers
  • Sofia is buying new skis. She finds that the average price of skis is $500 but the actual price could differ from the average as
    9·1 answer
  • Between Monday and Tuesday, Henry swam a total of 4 3⁄9 miles. If he swam 2 7⁄9 miles on Monday, how many miles did he swim on T
    14·1 answer
  • An Internet service company earned $770 in set-up fees for new homes in a neighborhood. They charged $35 for each new set-up.
    8·1 answer
  • Which trigonometric function would you use to solve the problem? If S=27° and TR=7 find TS (picture provided)
    8·1 answer
  • The problem is how many people must attend the third show so that the average attendance for three shows is 3000? And the other
    5·2 answers
  • Find the missing side length in the image attached.
    9·2 answers
  • Please help ASAP !<br> Please help ASAP !
    13·2 answers
  • Choose the graph of the solution to this inequality.<br> –6x &lt; 21
    9·2 answers
  • Integrate the question below<br>​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!