Encryption Matrices are commonly used to encrypt data. Here is a simple form such an encryption can take. First, we represent each letter in the alphabet by a number, so let us take < space > = 0, A = 1, B = 2, and so on. Thus, for example, "ABORT MISSION" becomes [1 2 15 18 20 0 13 9 19 19 9 15 14]. To encrypt this coded phrase, we use an invertible matrix of any size with integer entries. For instance, let us take A to be the 2 × 2 matrix 3 4 1 2 . We can first arrange the coded sequence of numbers in the form of a matrix with two rows (using zero in the last place if we have an odd number of characters) and then multiply on the left by A. Encrypted Matrix = 3 4 1 2 1 15 20 13 19 9 14 2 18 0 9 19 15 0 = 11 117 60 75 133 87 42 5 51 20 31 57 39 14 , which we can also write as [11 5 117 51 60 20 75 31 133 57 87 39 42 14]. To decipher the encoded message, multiply the encrypted matrix by A−1. The following exercise uses the above matrix A for encoding and decoding. Use the matrix A to encode the phrase "GO TO PLAN B".

Answers

Answer 1

Answer:

ok

Step-by-step explanation:


Related Questions

Fine floors can install 15 square yards of carpeting in 4 hours and 30 minutes. At this rate, how long would it take to install carpet in a room that measures 11 feet 9 inches by 13 feet 4 inches?​

Answers

Answer:

5 hours and 13 minutes

Step-by-step explanation:

Hope this helps!! Please mark brainlliest.

5 hrs and 13 minutes

Help me with this please 100 points if its done right

Answers

Answer:

[tex]P=24\sqrt{x}[/tex] and [tex]A=36x[/tex]

Step-by-step explanation:

To find the perimeter of the triangle, you have to add all the sides of the triangle. So, we get:

[tex]P=8\sqrt{x} +7\sqrt{x} +9\sqrt{x}[/tex]

Combine like terms, meaning the numbers with [tex]\sqrt{x}[/tex]

[tex]P=24\sqrt{x}[/tex]

To find the area of the triangle, we will use the formula [tex]A=\frac{1}{2} bh[/tex], where b is the base and h is the height

The base is: [tex]9\sqrt{x}[/tex]

The height is: [tex]8\sqrt{x}[/tex]

Plug and chug:

[tex]A=\frac{1}{2} *9\sqrt{x} *8\sqrt{x}[/tex]

[tex]A=\frac{1}{2} *72x\\A=36x[/tex]

Find angle picture below

Answers

Answer:

T = 67.5

V = 22.5

Step-by-step explanation:

The Sum of triangle angles = 180

180 = W + T + V

180 = 90 + 3X + X

X = 22.5

pls helppppppppppppppppppppp

Answers

Answer:

10 2/3

Step-by-step explanation:

Multiply 4 and 2 and then multiply 2 and 4. If you do that then you get 8 8/3. You then just take the numerator and turn it into whole numbers to get 10 2/3.

KEVIN USES EACH OF THE DIDGETS 5,7,4 AND 9, ONCE AND ONCE ONLY. TO MAKE FOUR DIDGET NUMBERS. WHATS THE LARGEST AND SMALLEST NUMBER HE CAN MAKE?

Answers

Answer:

9754 and 5794

Step-by-step explanation:

Answer:

Largest - 9,754

Smallest - 4,579

Step-by-step explanation:

remi and vishal start at the same point and begin jogging in different directions. remi is jogging east at a speed of 4 miles per hour. vishal is jogging South at a speed of 2 miles per hour. after how many hours will they be exactly 12 miles apart

Answers

Answer:

2.68 hours

Step-by-step explanation:

what is the value of 1/3x squared + 5.2y when x=3 and Y=2​

Answers

Answer:

13.4

Step-by-step explanation:

1/3(3²) + 5.2(2) = 3 + 10.4


Given that R = 6x + 9y
Find y when X = 1 and R= 39
Give your answer as an improper fraction in its simplest form.
y=

Answers

Answer:

11/3

Step-by-step explanation:

x=1, R=39, y=?

R=6x + 9y

(substitute the parameters into the equation)

39=6(1) + 9y

39= 6 + 9y

(collect like terms)

39 - 6 =9y

33=9y

(divide both sides by 9)

33/9=9y/9

11/3=y

therefore, y= 11/3

which is cube number​

Answers

Answer:

??????

Step-by-step explanation:

Answer:

2³ = 2 × 2 × 2 = 8.

3³ = 3 × 3 × 3 = 27.

4³ = 4 × 4 × 4 = 64.

5³ = 5 × 5 × 5 =125.

Step-by-step explanation:

so I don't know what 5*7 is because it confusing

Answers

Answer:

35/16

Explanation:

(5*7)/2^4

= 35/2^4

= 35/16

Note:

Please mark as brainliest! <3

5*7 is like the power of any number.

I need help. This is due tonight at 11:59 pm

Answers

Answer:

Answer: $118.50 per day

Step-by-step explanation:

1,000-348.25= 651.75

651.75÷5.5= 118.50

A map has a scale of 1/2 inches=16 miles the distance between two parks on the map is 2 3/4 inches how many miles apart are the parks

Answers

Answer:

88

Step-by-step explanation:

Find the value of x
PLEASE HELP!!

Answers

Answer:

x =45

Step-by-step explanation:

The two angles form a straight line so they add to 180 degrees

3x+45 = 180

Subtract 45 from each side

3x+45-45 =180-45

3x= 135

Divide by 3

3x/3 = 145/3

x =45

What is the solution to the equation?

Answers

Answer:

32.13

Step-by-step explanation:

g = 15.3 x 2.1 = 32.13

Answer:

g= 15.3 *2.1= 32.13

Hence answer is 32.13

2x + 3 – 4 = 5x - 7



2

-2

- 9

9

Answers

2x + 3 - 4 = 5x - 7

=> 2x + 3 - 4 + 7 = 5x

=> 3 - 4 + 7 = 5x - 2x

=> 3 - 4 + 7 = 3x

=> -1 + 7 = 3x

=> 6 = 3x

=> 6/3 = x

=> 2 = x

x = 2

Step-by-step explanation:

2x + 3 - 4 = 5x - 7 2x - 1 = 5x - 7 (-1 + 7 )= 5x - 2x6 = 3x 6 ÷ 3 = x2 = x

MARK ME AS BRAINLIST

b is 30 more than a. b is 6 times as many as a. Find the values of a and b.​

Answers

Answer:

a = 6 and b = 36

Step-by-step explanation:

Set up equations:

b = 30 + a

b = 6a

Subtract the two equations:

b = 6a

- (b = 30 + a)

5a - 30 = 0

5a = 30

divide both sides by 5

a = 6

Plug a = 6 into the original equation:

b = 30 + 6

b = 36

you could also do:

b = 6 * 6

b = 36

Answer:

Step-by-step explanation:

WILL MARK BRAINLIEST AND EXTRA POINTS ONLY HAVE 5 MINS

Answers

Answer:

1/3?

Step-by-step explanation:

PLEASE HELP! INVERSE QUESTION!

Answers

Last one.

Hope this helps.

Mike spent 11/12 hour talking on his cell phone. Brent spent 7/12 hour talking on his cell phone. How much more time did mike spend on his cell phone than Brent?

Write in the simplest form. Be sure to put your answer as well as the unit (hour).

Answers

Answer:

1/3

Step-by-step explanation:

Kelsey uses the similarity statement Triangle R S T is similar to triangle R U V to describe the triangles below.

Triangle R U V. Side V R is 4 centimeters, R U is 1.5 centimeters, and V U is 2.7 centimeters. Triangle R S T. Side R S is 3.0 centimeters, R T is 8.0 centimeters, and S T is 5.4 centimeters.

Which best describes the accuracy of her statement?
Accurate. Each pair of sides corresponds with a common ratio of 2.
Accurate. The description of each triangle begins at the same vertex.
Inaccurate. In the order listed, the ratio between each pair of sides is different.
Inaccurate. The description of the triangles in the similarity statement moves clockwise in one triangle and counterclockwise in the other triangle.

Answers

Answer:

A

Accurate. Each pair of sides corresponds with a common ratio of 2.

Step-by-step explanation:

edge 2021

Each pair of sides corresponds with a common ratio of 2. The correct option is A.

What is the similarity?

If two objects are having the same shape then they will be termed as similar. So in mathematics, if two figures have the same shapes, lines or angles then they are called similar.

If two figures have three sides similar then they will be similar by side-by-side property which is written as SSS.

Given that Triangle R U V. Side V R is 4 centimetres, R U is 1.5 centimetres, and V U is 2.7 centimetres. Triangle R S T. Side R S is 3.0 centimetres, R T is 8.0 centimetres, and S T is 5.4 centimetres.

The two triangles have a common ratio of 2.

R U = 1.5 cm

R S = 3.0 cm

V R = 4 cm

R T = 8.0 cm

The correct option is A.

To know more about similarities follow

https://brainly.com/question/24184322

#SPJ6

For the given functions f and g, find the requested composite function value.
f(x) = x - 8
x , g(x) = x2 + 6; Find ( g H f)(-2).

Answers

Answer:

106

Step-by-step explanation:

Composite function:

A composite function is represented by:

[tex](g \circ f)(x) = g(f(x))[/tex]

In this question:

[tex]f(x) = x - 8[/tex]

[tex]g(x) = x^2 + 6[/tex]

[tex](g \circ f)(x) = g(f(x)) = g(x-8) = (x-8)^2 + 6[/tex]

Find ( gof)(-2).

When x = -2. So

[tex](g \circ f)(-2) = (-2-8)^2 + 6 = (-10)^2 + 6 = 100 + 6 = 106[/tex]

The answer is 106.

Make x the subject of the formula a = b x + c

Answers

Answer:

[tex] x = \frac{a - c}{b}[/tex]

Step-by-step explanation:

[tex]a = bx + c \\ \\ a - c = bx \\ \\ \orange{ \bold{x = \frac{a - c}{b}}} [/tex]

Why is California at higher risk for earthquakes than North Dakota

( Also i know this isnt math but people answer faster when its in math )

Answers

Answer:

Step-by-step explanation:

Because calfornia is right next to Ocean

Which of the following is a solution to the inequality below?
10b≤ 59
A.) b=2
B.) b=7
C.) b=11
D.) b=9

Answers

Answer:

A.) b=2

Step-by-step explanation:

10b ≤ 59

Divide both sides by 10.

b ≤ 5.9

Any number that is 5.9 or less than 5.9 is a solution.

The only such number in the choices is 2.

Answer: A.) b=2

A teacher gives her class a particular examination on mathematics at the end of each year. The results are normally distributed with a mean test score of 60 and a standard deviation of 8. The teacher has told the class that students with a test score in the top 2.5% will win a special prize. Calculate the test score above which 2.5% of all test scores lie. Give your answer to 1 decimal place. Test score

Answers

Answer:

Test score of 75.7.

Step-by-step explanation:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

The results are normally distributed with a mean test score of 60 and a standard deviation of 8.

This means that [tex]\mu = 60, \sigma = 8[/tex]

Calculate the test score above which 2.5% of all test scores lie.

Above the 100 - 2.5 = 97.5th percentile, which is the value of X when Z has a pvalue of 0.975, so X when Z = 1.96.

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]1.96 = \frac{X - 60}{8}[/tex]

[tex]X - 60 = 8*1.96[/tex]

[tex]X = 75.7[/tex]

Test score of 75.7.

A circular placemat has 44 inches of braid around the edge. What is the area of the placemat to the nearest square inch? Use 3.14 for π.

Answers

Answer:

153.86 in^3

Step-by-step explanation:

Given data

A circular placemat has 44 inches of braid around the edge

hence the circumference of the placemat is 44 in

C= 2πr

44= 2*3.14r

r= 44/2*3.14

r= 44/6.28

r= 7.00 in

Area= πr^2

Area= 3.14*7^2

Area= 3.14*49

Area= 153.86 in^3

Hence the area is 153.86 in^3

If a guy named josh got 45 bucks for his b-day and already had 237 bucks. How much money does josh have all together.


Will give brainly!!!!!!

Answers

Answer:

That’s easy it is 282

Step-by-step explanation:

He will now have 282 bucks altogether.

Step-by-step explanation:

We already know that he has 237 bucks before his birthday, but now he has an additional 45 bucks that he got from his birthday. With this, you can create an equation that looks like this: 237+45. You then solve the equation by adding 45 to 237, which gets you 282 bucks altogether.

Factor Completely:::​

Answers

The answer is 3(2x^2+9x+8)
If this helped you then please consider marking this as brainliest

Answer:

6x²+27x+24

3(2x²-9x+8)

A line has a slope of 2. It passes through the points, (1,2) and (3,y) . what is the value of y?

Answers

Answer:

y=6

Step-by-step explanation:

y=mx+b

y=2x+0

the y-intercept is at the origin so going off that when you go to put your line on a graph you come off with the points (0,0) (1,2) (2,4) and finally your answer (3,6)

For f(x) = 2x+1 and g(x) = x2 – 7, find (f/g)(x)​

Answers

Step-by-step explanation:

Since f(x) is "2x + 1" and g(x) is "x2 - 7" then f(x) + g(x) [which is the same as (f + g)(x)] is "2x + 1" + "x2 - 7" which is 2x + 1 + x2 - 7 or x2 + 2x - 6

So (f + g)(x) = x2 + 2x - 6

is it right? i hope it is

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