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
SSSSS [86.1K]
3 years ago
8

Radio stations in a certain country use a sequence of 5 or 6 letters as their station identification call letters. The first let

ter must beZ or K or B . Assume there are no restrictions on the remaining​ letters, and repetition is allowed.
​a) How many 5​-letter station identifications are​ possible?
​b) How many 6​-letter station identifications are​ possible?
​c) How many total station identifications are​ possible?
​d) The identification for a​ randomly-chosen radio station is 5 letters in length. What is the probability that all 5 letters are​ different?
Mathematics
1 answer:
liubo4ka [24]3 years ago
3 0
A is the answer to your question
You might be interested in
What is the total surface area
Stels [109]

We have two right triangles and three different rectangles.

The formula of an area of a right triangle:

A_T=\dfrac{1}{2}l_1l_2

l₁, l₂ - legs

We have l₁ = 20cm and l₂ = 21cm. Substitute:

A_T=\dfrac{1}{2}(20)(21)=(10)(21)=210\ cm^2

The formula of an area of a rectangle:

A_R=lw

l - length

w - width

We have:

rectangle #1: l = 22cm, w = 29cm

A_{R1}=(22)(29)=638\ cm^2

rectangle #2: l = 22cm, w = 21cm

A_{R2}=(22)(21)=462\ cm^2

rectangle #3: l = 22cm, w = 20cm

A_{R3}=(22)(20)=440\ cm^2

The total Surface Area of the triangular prism:

S.A.=2A_T+A_{R1}+A_{R2}+A_{R3}\\\\S.A.=2\cdot210+638+462+440=1960\ cm^2

3 0
3 years ago
Ahhhhhhhhhhhhhhhhhhhhhhh
Bess [88]

Answer:

Its 9

Step-by-step explanation:

I did this in 5th grade... All you gotta do is count and there's 4 in the bottom aka 2 rows of 4 and there's 1 block on the top its 9

4+4+1=9

4+4=8

Add a 1 etc.

5 0
3 years ago
Using the given points and line, determine the slope of the line. (1, 2) and (2, 1) slope = 2 slope = 1 slope = -1
Bas_tet [7]

Answer:

-1

Step-by-step explanation:

Slope formula: (y₂ - y₁) / (x₂ - x₁)

= (2 - 1) / (1 - 2)

= -1

8 0
3 years ago
NEED HELP ASP which of the following is an example of a mixed number?
AleksandrR [38]

d)

First choice is an improper fraction because you can't have 22 ninths.

And the second two are just normal fractions, not wholes.

The first choice would be the right answer IF instead of writing it like that, it was written like this ( 2 4/9 )

Your answer is d).

8 0
3 years ago
Read 2 more answers
What is the equivalent of 1/50 : fraction , in decimal form
lina2011 [118]
What is the equivalent of 1/50: fraction , in decimal form? We can determine the equivalent values of the fraction 1/50 in one simple way.
By dividing 1 and 50 to get the quotient of the digits given. <span><span>

1.  </span>1 / 50 = 0.02</span>

Therefore, 0.02 is the decimal form of the given fraction 1/50 and is a rational number.



8 0
3 years ago
Read 2 more answers
Other questions:
  • Identify the figure formed with two square bases and four rectangular lateral faces
    6·2 answers
  • Which inequality best represents that ice cream at −5°C is cooler than ice cream at 4°C?
    14·2 answers
  • The first quartile of a data set is 23, the median is 30, the third quartile is 33, and an outlier is 6. Which of these data val
    13·1 answer
  • Solve for x using technology 2 log 3(x-1)=log(4 x 2-25)
    8·1 answer
  • Factor this polynomial<br> 2x²+19x+24
    9·1 answer
  • Select the three expressions that are equivalent to 14+14+14+14+14+14+14+1414+14+14+14+14+14+14+14.​
    9·2 answers
  • which statement is true about the polynomial 3x2y2 − 5xy2 − 3x2y2 2x2 after it has been fully simplified?
    7·2 answers
  • 6-2x=5x-9x+12 what is the value of x<br><br> its for savvas realize
    9·2 answers
  • The measures of three angles in a triangle are as follows:
    15·2 answers
  • Of the 81 teenagers at youth camp, 73% have a
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!