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Elis [28]
3 years ago
13

A lock has two buttons: a "0" button and a "1" button.To open a door you need to push the buttons according to a preset 8-bit se

quence. How many sequences are there? Suppose you press an arbitrary 8-bit sequence; what is the probability that the door opens? If the first try does not succeed in opening the door, you try another number; what is the probability of success?
Mathematics
1 answer:
ratelena [41]3 years ago
7 0

Answer:

Step-by-step explanation:

The problem relates to filling 8 vacant positions by either 0 or 1

each position can be filled by 2 ways so no of permutation

= 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2

= 256

b )

Probability of opening of lock in first arbitrary attempt

= 1 / 256

c ) If first fails , there are remaining 255 permutations , so

probability of opening the lock in second arbitrary attempt

= 1 / 255 .

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Is a vertical line a function
topjm [15]

Answer:

No

Step-by-step explanation:

Explanation 1)A vertical line can be represented by the equation x=a, where a can be any number. If you think about it, there is no y in the function, this making it not a function.

Explanation 2) For a line to be a function it has to pass the vertical line test, so you will draw a vertical line through the function and if it touches more than one point then it is not a function. In this case if you draw a vertical line through a vertical line there are an infinite number of places where the lines intercept, so it is not a function.

4 0
2 years ago
Read 2 more answers
Solve:
Temka [501]

Answer:

a= -5

Step-by-step explanation

PEMDAS

8 0
2 years ago
A store manager is accepting applications for part-time workers. he can hire no more than 14 people. so far,he has hired 9 peopl
Lorico [155]

The manager already hired 9 people. Let x be the number of people he still can hire. Since these people will add to the 9 he already hired, when the hiring campaign will be over he will have hired 9+x people. We know that he can't hire more than 14 people, so the number of people hired must be less than or equal to 14:

9+x \leq 14

If we subtract 9 from both sides, we have

x \leq 14-9=5

so, the manager can hire at most 5 other people

6 0
3 years ago
Which of the following is not a polygon
sp2606 [1]

<u><em>PLEASE PROVIDE AN EXAMPLE!</em></u>

-

Without an example, the only thing I can tell you is a Polygon is a plane figure with three straight sides (or more) and angles. (usually 5 or more.)

<em>-</em>

<em>Sorry, This was all I could provide with the amount of information given, please try to provide more information! If you have extra information, please let me know and I'll be sure to help!</em>

7 0
3 years ago
The ratio of my action to comedy movies is 4:5. If I have 35 comedy movies, how many are action? *
iogann1982 [59]

Answer:

28 action movies

Step-by-step explanation:

  1. Set up a proportion: \frac{4}{5} = \frac{x}{35}  
  2. Cross multiply, then divide: 35 × 4 = 140, 140 ÷ 5 = 28
  3. So, if you have 35 comedy movies, you would have 28 action movies.

I hope this helps!

8 0
3 years ago
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