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Maslowich
3 years ago
9

In 1912, the U.S. government began issuing licenses to radio stations. Each station was given a unique three-letter call sign. R

adio stations in the western United States were given call signs starting with K. Stations in the east were given call signs starting with W. For example, the radio station with the call sign ABC is KABC in California, and WABC in Georgia.
a. How many different three-letter call signs are there?

Hint: don’t worry about the K or W – just find the number of ways to arrange any 3 letters



b. How many different three-letter call signs are there where the first letter is a D?

Hint: again, the K and W don’t matter



c. In a random selection of radio station call signs, what is the probability of selecting a radio station with a call sign that starts with the letter D?
Mathematics
1 answer:
tatuchka [14]3 years ago
6 0

Answer:

A would make sense

Step-by-step explanation:

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3 years ago
Which of these lines is perpendicular to the line y = 3x + 2?
Morgarella [4.7K]

Answer:

(c)  y=\frac{-1}{3}x+4  will be perpendicular to the line y = 3x+2

Step-by-step explanation:

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On comparing with standard equation of line m = 3

We know that slope of perpendicular line is =\frac{-1}{m}

So the slope of the line which is perpendicular to y = 3x+2  will be =\frac{-1}{3}

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3 0
3 years ago
HELP HELP HELP PLSSSSSS
il63 [147K]

Answer:

here the link:

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3 years ago
- 4y = - 40<br> please show work if you can
Valentin [98]
Y = 10
-4 * 10 = 40

Hope this helps!!!:):):)
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3 years ago
Please help! this the last question
valentinak56 [21]
It’s C. I have to put more letters just ignore this
4 0
2 years ago
Read 2 more answers
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