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
Tcecarenko [31]
3 years ago
12

How many different arrangements of 7 letters can be formed if the first letter must be w or k? (repeats of letters are? allowed)

?
Mathematics
1 answer:
mojhsa [17]3 years ago
6 0
<h2>Answer:</h2>

The total number of different arrangements of 7 letters that are possible if the first letter will be w or k is:

                        617,831,552

<h2>Step-by-step explanation:</h2>

The number of different arrangements of 7 letters can be formed if the first letter must be w or k such that the repetition of the letters are allowed are:

   2×26×26×26×26×26×26

( Since, at the first place any of the 2 letter out of w or k could come up.

and from the second to seventh place any of the 26 letters of the English alphabet may come up )

Hence, total number of arrangements = 617,831,552

You might be interested in
How do I solve this problem? I need to find the volume of this composite figure.
andrey2020 [161]

Step-by-step explanation:

V = (12*4*5) + (2*3*5) + (5*3*5) + (12*4*5)

V = 240 + 30 + 75 + 240

V = 585 cm^3

8 0
3 years ago
Identify the coordinates for point B. Type your answer in the form (#,#), without spaces.
neonofarm [45]

Answer:

point B = (3,-2)

Step-by-step explanation:

7 0
2 years ago
PLEASE HELP 4 QUESTIONS 90 POINTS
kondor19780726 [428]

1.  n^2 -8n +16 = 25

Subtract 25 from both sides

n^2 - 8n + 16 - 25 = 0

Simplify

n^2 - 8n - 9 =0

Factor

(n-9)(n+1) = 0

Solve for n

n-9 = 0, n = 9

n+1 = 0, n = -1

Solution: 9,-1


2. C = b^2/25

Multiply both sides by 25:

25c = b^2

Take square root of both sides

b = +/-√25c

Simplify:

b = 5√C, -5√C


3. d = 16t^2 +12t

subtract d from both side:

16t^2 + 12t -d =0

Use quadratic formula to solve:

t = (3 +/-√(9-4d))/8


4. 5w^2 +10w =40

Subtract 40 from both side:

5w^2 + 10w -40 = 0

Factor:

5(w-2)(w+4)=0

Divide both sides by 5:

(w-2)(w+4)=0

Solve for w:

w-2 = 0, w = 2

w+4=0, w = -4

Solution: 2,-4



4 0
3 years ago
Read 2 more answers
A shopkeeper marks his goods at 40% above cost (the price he pays for the goods) and then offers a 25% discount.if a jacket cost
Pachacha [2.7K]

Answer:

A shopkeeper marks:

$200 * 1.4 = $280

Step-by-step explanation:

With a discount of 25%:

$280 * 0.75 = $210

3 0
2 years ago
The product of 15 and the difference between 5 and - 7<br> A numerical expression
kupik [55]

Answer:

15×5-7

75-7

68

answer =68

5 0
2 years ago
Other questions:
  • Let x represent the year and y represent the amount of sales, in millions of dollars, in the regression equation.
    13·1 answer
  • What is the approximate volume of a cone with a height of 9 ft and radius of 3 ft?
    9·2 answers
  • 7) c/a=d-r, for a<br><br> thanks
    15·1 answer
  • Find the difference of the 2 prime numbers between 25 and 35​
    8·1 answer
  • PLEASE HELP I NEED HELP ASAP PLEASE
    7·1 answer
  • Please help this is due soon 2
    5·2 answers
  • Someone wanna heelpp!!!!!<br>​
    14·2 answers
  • How can i identify a slope
    14·2 answers
  • What is the enlargement ratio of you enlarge a 8:6 to have a height of 12 units and a width of 16 units.
    14·1 answer
  • 2.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!