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Ugo [173]
3 years ago
11

A N S W E R Q U I C K L Y P L E A S E

Mathematics
1 answer:
Ksju [112]3 years ago
3 0

Answer:

Your answer is D

Step-by-step explanation:

<u>I literally have an Math Expert right next to me and he verified this answer!</u>

<u>Plz gimme a like!!</u>

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What is the value of 2 b + 24 equals 30​
madam [21]
The answer is b = 3. you subtract 24 from bothe sides and then divide by 2.
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4 years ago
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Matrix multiplication was used to encode a message using the given encoding matrix: [i 47 A=1 |-1 -3] The original message was c
nadya68 [22]

Answer:

A^{-1}=\left[\begin{array}{cc}-3&-4\\1&1\end{array}\right] message SHOW_ME_THE_MONEY_  

Step-by-step explanation:

The matrix

A=\left[\begin{array}{cc}1&4\\-1&-3\end{array}\right]\rightarrow |A|=(1 \times -3)-(-1\times 4)=1\\\rightarrow A^{-1}=\left[\begin{array}{cc}-3&-4\\1&1\end{array}\right] \\

We can check that in fact A*A^⁻1=I_2 the identity matrix of size 2 x 2.

Now the message was divided in 1 x 2 matrices, then we have that the sequence given is the result of multiplying m by A, so to get m again we multiply now by A^⁻1. and we get the next table

Encoded message    Decoded message    message in letters by association

11 52        19 8    S H

-8 -9         15 23  O W

-13 -39        0 13   _ M

5 20         5 0   E _

12 56        20 8    T H

5 20         5 0    E _

-2 7           13 15  M O

9 41         14 5   N E

25 100       25 0    Y _

Then the message decoded is SHOW_ME_THE_MONEY_                                

3 0
3 years ago
Jeff is four years less than twice his nephew's
ira [324]

Answer:

His nephew would be 11.

Step-by-step explanation:

First, you should model the word problem into an equation. This gives you the equation 18=2x-4. Then, you add 4 to both sides of the equation, getting 22=2x. Then, you divide both sides by two, which equals 11, which shows that his nephew is 11 years old. Hope this helped!

8 0
4 years ago
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Explain how to use mental math to find 620-278?
xz_007 [3.2K]
Party do 6-2,2-7,0-8
4 0
4 years ago
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What is the perimeter of the rectangle?
Sholpan [36]

Answer:

32

Step-by-step explanation:

P=2(l+w)

so 2(11+5)=P

2(11+5)=32

7 0
4 years ago
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