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ioda
3 years ago
5

SimplIfy [(-49)÷7]÷(-7)]

Mathematics
1 answer:
Marysya12 [62]3 years ago
4 0

Answer:

I think the answer is 1

Step-by-step explanation:

-49÷7=-7

-7÷-7=1

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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
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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
2 years ago
Point a,b and are collinear and b bet a,c if ab=48,ab=2x +2,and bc=3x+6 what is bc?​
koban [17]
8 bra cause that’s the answer I got for sure
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3 years ago
Someone please help i can’t find the answer.
Mrrafil [7]

Answer:

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Step-by-step explanation:

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Answer:

there are 5 strawberries

Step-by-step explanation:

4 x 5 =20 so that is 20 blue berries  

and there are 4 blue berries for every one strawberry

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5 0
3 years ago
Need help please if anyone one can help me now I will like that
gizmo_the_mogwai [7]

Answer:

.

Step-by-step explanation:

5 0
2 years ago
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