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
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 .

You might be interested in
What is the result when the number 40 is increased by 10%?
Goshia [24]

The answer is 44.

40 / 100 = 0,4 * 10 = 4 (10%)

40 + 4 = 44

7 0
3 years ago
Read 2 more answers
A spa charges 40 dollars for a day pass and 20 dollars extra for treatments. What is the cost of going to the spa if you get 2 t
sergij07 [2.7K]

Answer:

$80 dollars.

Step-by-step explanation:

So you get charged $40 to get in and $20 extra for any treatment.

You get 2 treatments so that is $40.

$40+$40=$80 is your answer.

6 0
2 years ago
A pair of complex numbers who have the same real and imaginary parts, but the imaginary parts have opposite signs. Their product
mixas84 [53]

Answer:

conjugate pair

Step-by-step explanation:

7 0
3 years ago
The point slope form of a line with a slope of 2 through (1, 4) is y – 4 = 2(x – 1).
ella [17]

Answer:

TRUE

Step-by-step explanation:

y-4 = 2(x-1)

here, 4 is representing the y value and 1 is representing the x value.

And the slope is 2.

8 0
2 years ago
The blueprint for a new swimming pool uses the scale 3/4
beks73 [17]

Answer:

3 in wide by 4.5 in long.

Step-by-step explanation:

3/4=0.75

I divided the given dimensions by two, so I could multiply .75 by the sets of twos instead of dividing 3/4 by two and multiplying that by 12 and 8.

.74 x 4 = 3

.75 x 6 = 4.5

7 0
3 years ago
Other questions:
  • Solve x:<br> (On the attachment), please help, homework due in for tomorrow! X
    8·1 answer
  • What are three ways to say x&gt;5 in words
    8·1 answer
  • A motorboat can maintain a constant speed of 17 miles
    13·1 answer
  • Jimmy has to fill up his car with gasoline to drive to
    14·1 answer
  • 16. The temperature on the ground during a plane's takeoff was -7°F. At 38,000 feet in the air, the temperatureoutside the plane
    14·1 answer
  • Pre cal help please
    15·1 answer
  • X + 2 + 6 = 8<br> please help
    11·2 answers
  • Giving brainliest!!!! For correct answer give me a explanation not a long explanation tho.
    5·2 answers
  • In quadrilateral CLAP, angle p is a right angle, LA = CP, and CL = AP. This information can be used to prove that CLAP is a
    5·1 answer
  • Can someone please help me with question 7 8 and 9 please
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!