All categories

3 years ago

A fair coin is flipped three times. What is the chance that no head will appear?

SAT

2 answers:

AysviL [449]3 years ago

8 0

A
50% each time, therefore 1/2
(1/2)^3 = 1/8

Lady bird [3.3K]3 years ago

6 0

D would be your answer . There are only 2 sides to a penny, so half of 2 is 1 . 1/2 a chance .

You might be interested in

The diploid number of chromosomes in a human skin cell is 46. how many chromosomes are in a human egg cell?

Anna [14]

Normal human body cells are diploid and the basic chromosomes number of human cell is (n) 23. Thus, a normal human cell has (2n) 46 chromosomes out of which 44 are autosomes and 2 are gender chromosomes XY.

<h3></h3><h3>What are chromosomes?</h3>

Chromosomes are threadlike structure of nucleic acids and protein present in the nucleus of living cells, carry genetic information in the form of genes.

The "X" or "Y" gene which determines whether new born will be a boy or a girl is an example of a chromosome. the below diagram representing the chromosome.

For more details regarding chromosomes, visit:

brainly.com/question/11912112

#SPJ1

6 0

2 years ago

A single-platter disk has rotation speed 7200 rpm, number of tracks on one side of platter is 30,000, number of sectors per trac

nexus9112 [7]

Answer:

Rotation Speed = 7200 rpm

No. of tracks on one side of platter = 30000

No. of sectors per track = 600

Seek time for every 100 track traversed = 1 ms

To find:

Average Seek Time.

Average Rotational Latency.

Transfer time for a sector. Total Average time to satisfy a request.

Explanation:

a) As given, the disk head starts at track O. At this point the seek time is 0.

Seek time is time to traverse from 0 to 29999 tracks (it makes 30000)

Average Seek Time is the time taken by the head

to move from one track to another/2

29999 / 2 = 14999.5 ms

As the seek time is one ms for every hundred

tracks traversed. So the seek time for 29,999 tracks traversed is

14999.5/100 = 149.995 ms

b) The rotations per minute are 7200

1 min = 60 sec

7200 / 60 = 120 rotations / sec

Rotational delay is the inverses of this. So 1/120 = 0.00833 sec

= 0.00833 * 100

= 0.833 ms

So there is 1 rotation is at every 0.833 ms

Average Rotational latency is one half the amount of time taken by disk to make one revolution or complete 1 rotation.

So average rotational latency is: 1 / 2r

8.333/2 = 4.165 ms

c) No. of sectors per track = 600

Time for one disk rotation = 0.833 ms

So transfer time for a sector is: one disk revolution time / number of sectors

8.333 / 600 = 0.01388 ms = 13.88 μs

d) Total average time to satisfy a request is calculated as :

Average seek time + Average rotational latency + Transfer time for a sector

= 149.99 ms + 4.165 ms + 0.01388 ms

= 154.168 ms

4 0

2 years ago

Modern industrial countries are working on a shift from ___________ on fossil fuels to ___________ more renewable resources like

Aleks [24]

Options needed for the answers

3 0

2 years ago

Which best describes the strength of the correlation, and what is true about the causation between the variables? it is a weak n

anzhelika [568]

The true statement about the causation between the variables it is a weak negative correlation, and it is not likely causal.

<h3>What is causation between the variables?</h3>

The causation between the variables shows that the occurrence of one event causes the occurrence of the other.

The informal relationship between two events.

Thus, the correct option is A, it is a weak negative correlation, and it is not likely causal.

Learn more about variables

brainly.com/question/15740935

#SPJ1

6 0

2 years ago

Does anybody know how to mark people as brainliest

Feliz [49]

$\small\color{purple}{ \colorbox{blue}{\colorbox{aqua} {Question:}}}$

How to mark people's Answer as brainliest?

$\small\color{purple}{ \colorbox{blue}{\colorbox{aqua} {Answer:}}}$

When we ask any questions, that time many of the user's find it easy and answer our questions but only two users can able to answer our questions. So, When two users answers our questions, remember, there will be a Option “Mark as brainliest” down the one answer & another down of one answer. So, The answer which you think is satisfied to you and is good, then mark that answer as brainliest. If only one user has answered your question, Then the option “Mark as brainliest” wouldn't come quickly, after one day or two days, the Option of marking answer as brainliest will come and also you'll get the notification about it. Also, When you make anyone's answer as brainliest, you also gain some points!

<h3>HOPE IT HELPED YOU TIKKI!! </h3>

MARK ME AS BRAINLIEST IF IT HELPS YOU! (^‿^)

3 0

2 years ago