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bezimeni [28]
3 years ago
12

Find the inverse of this 3x3 matrix. [1 5 2]

Mathematics
1 answer:
MissTica3 years ago
5 0
Lets say the 3x3 Matrix is 

M =   [1   5   2 ]
         [1   1   7 ]
         [0  -3   7 ]

We apply the Gauss-Jordan elimination method (Procedure and result shown in the image below)

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koban [17]

Answer:

7.5

Step-by-step explanation:

Using pythagoras theorem

Sqrt(9^2-5^2)=7.483

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Distribute and combine like terms. Please show all of your work.<br><br> -5(3x + 7) - 4(x - 4) + 11
Varvara68 [4.7K]

For this case we have the following expression:

-5 (3x + 7) -4 (x-4) +11

For simplicity we follow the steps:

We apply distributive property to the terms within the parenthesis, bearing in mind that:

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We add similar terms taking into account that equal signs are added and the same sign is placed, while different signs are subtracted and the sign of the major is placed.

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3 years ago
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What is the slope of a line perpendicular to the line whose equation is 6x+4y=-56
alex41 [277]

Answer:

First, put the equation of the line given into slope-intercept form by solving for y. You get y = -2x +5, so the slope is –2. Perpendicular lines have opposite-reciprocal slopes, so the slope of the line we want to find is 1/2. Plugging in the point given into the equation y = 1/2x + b and solving for b, we get b = 6.Step-by-step explanation:

|\   /|

 \|_|/

 /. .\

=\_Y_/=

 {>o<}

5 0
2 years ago
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Crazy boy [7]

Answer:

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