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4 years ago

During the revision phase, it is a good idea to

Computers and Technology

2 answers:

aksik [14]4 years ago

6 0

I took this quiz and got A right.
Hop helps even though i'm kinda late.

BlackZzzverrR [31]4 years ago

6 0

Answer:

its A

Explanation:

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HACTEHA [7]

Question 6 west Germany

3 0

3 years ago

You need to have a password with 5 letters followed by 4 even digits between 0 and 9, inclusive. if the characters and digits ca

aleksandr82 [10.1K]

We all know that there are 26 letters available in the alphabet and there are just 5 even numbers between 0 and 9. We are now given the situation of how many passwords can we make out of the criteria of having 5 letters that cannot be repeated and 4 even digits from 0-9. We cannot repeat the numbers and letters, thus our password will look something like this, LLLLLNNNN, where L is a letter and N is a number. Let us note that we cannot use the characters and digits more than once.This is how we will solve the probable number of passwords.

26 x 25 x 24 x 23 x 22 x 5 x 4 x 3 x 2

When we compute this formula, we will have the total number of possible passwords:

947,232,000.00

There are 947,232,000 possible passwords based on the given criteria.

8 0

3 years ago

Davos has been reading about encryption recently. He begins to wonder how anything can be secure if everyone is using the same s

vazorg [7]

Answer:

The correct answer is B. Cipher.

Explanation:

Cipher is a system of reversible transformations that depends on some secret parameter, called key, and is designed to ensure the secrecy of transmitted information.

The cipher can be a combination of conventional characters or an algorithm for converting ordinary numbers and letters. The process of making a message secret with a cipher is called encryption. An important parameter of any cipher is the key - a parameter of the cryptographic algorithm, which ensures the selection of one transformation from the set of transformations possible for this algorithm. In modern cryptography, it is assumed that all the secrecy of a cryptographic algorithm is concentrated in the key.

7 0

3 years ago

Write a C program that gets 4 integer values from the user, namely, x1, x2, y1, and y2, and then calculates and returns the dist

lidiya [134]

Answer:

#include <stdio.h>

#include <math.h>

int main(){

float x1,x2,y1,y2,distance;

printf("x1: "); scanf("%f", &x1);

printf("y1: "); scanf("%f", &y1);

printf("x2: "); scanf("%f", &x2);

printf("y2: "); scanf("%f", &y2);

distance = sqrt((x1 - x2)*(x1 - x2) + (y1 - y2)*(y1 - y2));

printf("Distance: %f", distance);

return 0;

}

Explanation:

This line declares all required variable (i.e. the coordinates and the distance)

float x1,x2,y1,y2,distance;

The next four line prompt and get input for the coordinates

printf("x1: "); scanf("%f", &x1);

printf("y1: "); scanf("%f", &y1);

printf("x2: "); scanf("%f", &x2);

printf("y2: "); scanf("%f", &y2);

This calculates the distance

distance = sqrt((x1 - x2)*(x1 - x2) + (y1 - y2)*(y1 - y2));

This prints the calculated distance

printf("Distance: %f", distance);

See attachment for sample runs

4 0

3 years ago

Assume that two parallel arrays have been declared and initialized: healthOption an array of type char that contains letter code

givi [52]

Answer:

if (annualCost[0] < annualCost[1])

{

best2 = healthOption[0];

}

else

{best2 = healthOption[1];

}

Explanation:

The required code is given above.

4 0

3 years ago