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Oksanka [162]
3 years ago
13

5. A cyclist and bike have a total mass of 102 kg and a speed of 17 m/s.calculate the kinetic energy?

Mathematics
1 answer:
yanalaym [24]3 years ago
8 0

Answer:

14739

Step-by-step explanation:

1/2mv^2

1/2*105*17*17

=14739

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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
Identify the slope and the y-intercept of the line.<br> y = 3x + 9
Sonja [21]

Answer:

slope = -3 , y-intercept = 9

Step-by-step explanation:

6 0
3 years ago
Round to the nearest thousand then subtract
dsp73
100

6738 —> 7000
5903 —> 6000

7000 - 6000 = 1000
6 0
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An adult takes 400mg of vitamin c. Each hour, the amount of vitamin c in the person’s system decreases by about 29%. How much vi
nekit [7.7K]

Answer:

1

Step-by-step explanation:

5 0
3 years ago
Solve the system x-z=5, 2x+y= 7, y+3z=12
Wewaii [24]
x,z,y = 20,15,-33

i think thats it im sorry
7 0
3 years ago
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