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
balandron [24]
3 years ago
7

How many 4 letter codes can be made and no use the same letter twice

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
6 0

The first letter can be any one of the 26 letters in the alphabet.  For each one . . .
The second letter can be any one of the 25 remaining ones.  For each one . . .
The third letter can be any one of the 24 remaining ones.  For each one . . .
The fourth letter can be any one of the 23 remaining ones.

Total possible 4-letter codes = (26 x 25 x 24 x 23) = <em>358,800 </em>


You might be interested in
Patel squeezed oranges so that his family could have fresh-squeezed juice for breakfast. He squeezed StartFraction 4 over 17 End
zhenek [66]

Answer:A

Step-by-step explanation:this is not true

7 0
3 years ago
An equipment rental company charges a flat rate of $25, plus $13 per day for insurance. Kyle has $121. Write an inequality to re
damaskus [11]
The inequality begins with the flat fee of $25.  We then add the $13 per day for insurance as 13<em>d</em>, where <em>d</em> is the number of days.  This gives us the expression
25 + 13<em>d</em>.  Since he only has $121, we must use less than or equal to for our inequality; he can't spend any more than $121, but he can spend any number below it up to that number.  This gives us
25 + 13<em>d</em> ≤ 121<em />
8 0
3 years ago
Which expression is equivalent to (18x + 9k) + (2x + 6k)?
Verizon [17]

20x + 15k is the answer we just have to remove the bracket and add the terms

hope it helps

4 0
2 years ago
Read 2 more answers
How much interest is earned in one year on 5,000 at an interest rate of 3%?
Sergio039 [100]
150 is the amount of interest earned for one year because the formula of PRT is, in this case 5000 times 0.03 times one which gets you the answer of 150.
8 0
3 years ago
Listed below are the summary statistics from samples of strontium-90 in baby teeth obtained from twelve Pennsylvania residents a
qaws [65]

Answer:

9.72

Step-by-step explanation:

s1 = 10.6383 ; s2 = 5.21289

x1 = 147.583 ; x2 = 136.417

n1 = 12 ; n2 = 12

df1 = n1 - 1 = 12 - 1 = 11

df2 = n2 - 1 = 12 - 1 = 11

The test statistic :

(x1 - x2) / sqrt[(sp²/n1 + sp²/n2)]

Pooled variance = Sp² = (df1*s1² + df2*s2²) ÷ (n1 + n2 - 2)

Sp² = ((11*10.6383) + (11*5.21289)) / 22 = 7.926

Test statistic, T* :

(147.583 - 136.417) / √(7.926 * (1/12 + 1/12))

11.166 / √(7.926 * (1/6)

11.166 / √1.321

11.166 / 1.1493476

T* = 9.7150766

Test statistic = 9.72

5 0
3 years ago
Other questions:
  • 4/9 times what equals 1?
    11·1 answer
  • This is good ????????????????
    5·2 answers
  • Hi, it would be appreciated if u guys can answer this as soon as possible.
    15·2 answers
  • What is the equation of the line that passes through the point (-5,7) and has a<br> slope of -2/5
    12·2 answers
  • the price of a small pizza increased from $6 to $9 what is the percent of increase in the coast of the pizza round the nearest p
    15·1 answer
  • 35 POINTS WILL GIVE BRAINLIEST HELP
    11·1 answer
  • Solve for v.<br><br> –5v = 3v − 16
    14·2 answers
  • The first step to finding the quotient is to ?
    11·1 answer
  • A tourist from Britain wants to exchange her British pounds for US dollar. She has 25 British pounds. How many US dollars would
    10·1 answer
  • What is the slope of the line that passes through the points (0,0) and (0,5)? Write
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!