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4 years ago

What 2 major agricultural inventions did jethro tull create?

2 answers:

6 0

seed drill, the horse drawn h o e, and an improved plough. Sorry I had to space out that word.

kenny6666 [7]4 years ago

5 0

Jethro Tull created the seed drill, and improved plough.
Hope it helps

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a password to a certain database consists of digits that cannot be repeated. if the password is known to consist of at least 8 d

BaLLatris [955]

Answer:

$\frac{10!}{2}mins$

Explanation:

12 seconds to try one combination will be equivalent to $\frac{1}{12}\times 60 = \frac{1}{5} \ mins$

Password contain at least 8 digit i.e. password can contain 8, 9, 10 digit.

Password cannot contain more than 10 digit because it will give room for repetition which it is clearly stated that digit cannot be repeated.

Possible digit that can be used: 9,8,7,6,5,4,3,2,1,0.

Total number of passwords combination possible for each position in 8 digit.

1st position = 10, 2nd position = 9, 3rd position = 8, 4th position = 7, 5th position = 6, 6th position = 5, 7th position = 4, 8th position = 3. Total number of passwords combination possible in 8 digit is equivalent to $\frac{10!}{2}$ .

Total number of passwords combination possible for each position in 9 digit.

1st position = 10, 2nd position = 9, 3rd position = 8, 4th position = 7, 5th position = 6, 6th position = 5, 7th position = 4, 8th position = 3, 9th position = 2. Total number of passwords combination possible in 9 digit is equivalent to $\frac{10!}{1}$ .

Total number of passwords combination possible for each position in 10 digit.

1st position = 10, 2nd position = 9, 3rd position = 8, 4th position = 7, 5th position = 6, 6th position = 5, 7th position = 4, 8th position = 3, 9th position = 2, 10th position = 1. Total number of passwords combination possible in 10 digit is equivalent to 10!.

Adding them up and multiplying by $\frac{1}{5} \ mins$ to get the total number of time needed to guarantee access to database = $[\frac{10!}{2}\times\ \frac{10!}{1} \times 10!] \frac{1}{5}\ mins = \frac{10!}{2}$

7 0

3 years ago

The computer has had far-reaching effects on our lives.how has the computer effected your life?

Elden [556K]

Answer: The computer is one of the greatest inventions of human history. The computer has had effect on the lives of each and ever individual. The computer has lead to the birth of digital global world with all the transaction and governance systems being digitalised.

Explanation:

Computer has itself made into a big profession with many innovations still being carried out. Due to internet technologies people have become connected more and more and are able to know the details of any news happening anywhere. It has also increased the knowledge level of people in all the developed and developing nations.

It has increased the ease of everyday life.

8 0

3 years ago

What is branching in Python

timama [110]

Answer:

Branching is where a program decides whether to do something or not.

6 0

3 years ago

If an OS is using paging with offsets needing 12 bits, give the offset (in decimal or hexadecimal) to: the third word on a page

Mariulka [41]

Answer:

Explanation:

If an OS is using paging with offsets needing 12 bits, give the offset (in decimal or hexadecimal) to: the third word on a page the last word on a page.

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3 years ago

define the physical components of hardware for a computer system,including identifying internal hardware devices(e.g. processor,

kap26 [50]

Answer:

Explanation:

The necessary hardware components that a computer requires to run properly are the following.

Motherboard, this is the main circuit board that interconnects all of the components and allows them to interact with each other.

CPU, this is the brain of the computer where all calculations and processes are handled.

Video Card, this component handles all the visual data, rendering that the computer needs in order to get a proper image.

RAM, these components are the physical memory where temporary data is stored and used.

Hard Disk, this is the main storage drive where all your data will be saved including the operating system.

PSU, this is the power supply of the unit that distributes the correct amount of power to every other component in the system.

Sound Card, this component handles all the input and ouput audio signals for a computer.

7 0

3 years ago