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TEA [102]
2 years ago
10

Select the correct answer. which is the inverse of this matrix? a. b. c. d. e. the matrix is noninvertible.

Mathematics
1 answer:
Usimov [2.4K]2 years ago
7 0

A. [-19    9    -7

       15    -7    6

       -2     1    -1 ] is the correct answer.

The question is incomplete but assuming inverse is asked for the matrix

X= [ 1     2      5

      3     5      9

       1      1      -2]  

Step 1: to calculate the determinant, |X|=1

Step 2: to find the adj X=  [-19    9     -7

                                             15    -7     6

                                              -2     1      -1]

Step 3: find the inverse, which is given by Adj X/ |X|, hence, the answer A.

learn more about how to find inverse of a matrix here brainly.com/question/12442362

#SPJ4

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RoseWind [281]

Answer:

stretched by a factor of 2, reflected over the y-axis, and translated 9 units left

Step-by-step explanation:

The given function is y=\sqrt{-4x-36}

We can rewrite this function by factoring -4 in the radicand to get:

y=\sqrt{-4(x+9)}

We further simplify the square root of 4 to get:

y=2\sqrt{-(x+9)

The parent function is y=\sqrt{x}

When we compare to the parent function, there is a stretch by a factor of 2, reflection over the y-axis, and translation 9 units left

The last option is correct

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NISA [10]

Answer:

x = 6

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Step-by-step explanation:

1/4 x + 1/2 = 1/3 x

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6 0
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In the figure below, find the exact value of y. (Do not approximate your answer.)
e-lub [12.9K]

The exact value of the y in the similar right triangle is 2.2360679775 units

<h3 /><h3>How to find the side of a triangle?</h3>

The triangles are similar.

Similar triangles have corresponding sides of equal ratio.

The corresponding angles of similar triangle are equal.

Therefore, using similar ratio,

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Therefore,

y = 2.2360679775 units

learn more on triangles here: brainly.com/question/2773823

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