HELP! GIVING AWAY 100 POINTS IF YOU ANSWER! Question #1: Convert the plaintext "PRIME" into ciphertext by using multiplication by 5 in the mod 26 multiplicative cipher system. Provide written evidence of your work/computations.

Question #2: When using a multiplicative cipher system in mod 26, how many different values can be used for the "multiply by" number? Explain/Justify how you arrived at your answer.

Question #3: How does using a prime mod value make a multiplicative cipher system more secure than a non-prime mod? Explain/Justify your answer.

Question #4: The ciphertext "dqw9" was created using a multiplicative key of 4 in mod 37. Convert the ciphertext "dqw9" back into plaintext.

c 1 hour

step-by-step explanation:

m = 2e

m = 2 so 2 = 2e

1 = e

the answer is simply just 6n add the two together as they have an n

a.   we have two

lines:   y = 4-x   and  

y = 8-x^-1

given two simultaneous equations that are both to be

true, then the solution is the points where the lines cross. the intersection is

where the two equations are equal. therefore the solution that works for both

equations is when

4-x = 8-x^-1

this is where the two lines will cross and that is the

common point that satisfies both equations.

b.   4-x = 8-x^-1

  x           4-x       8-x^-1

-3           7        

8.33

-2           6         8.5

-1           5         9

  0           4        

-

  1           3        

7

  2           2        

7.5

  3           1         7.67

the table shows that none of the x values from -3 to 3 is

the solution because in no case does

4-x = 8-x^-1

to find the solution we need to rearrange the equation to

find for x:

4-x = 8-x^-1

multiply both sides with x:

4x-x^2 = 8x-1

x^2+4x-1=0

x= -4.236, 0.236

therefore there are two points that satisfies the

equation.

find y:  

x=-4.236

y = 4-x   = 4 – (-4.236)

= 8.236

y = 8-x^-1 =   .236)^-1

= 8.236

x=0.236

  y = 4-x   = 4 – (0.236) = 3.764

y = 8-x^-1 =   8-(0.236)^-1

= 3.764

thus the two lines cross at 2 points:

(-4.236, 8.236) & (0.236, 3.764)

c.   to solve

graphically the equation 4-x = 8-x^-1

we would graph both lines: y = 4-x   and   y

= 8-x^-1

the point on the graph where the lines cross is the

solution to the system of equations.

just graph the points on part b on a cartesian coordinate

system and extend the two lines.   the

solution is, as stated, the point where the two lines cross on the graph.

step-by-step explanation:

mark brainliest!

d 600 because 15*10*2=300

300+300=600

step-by-step explanation: