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earnstyle [38]
3 years ago
15

Please answer If I get this right I'm done for the week I will give brainiest if you're right!!!

Mathematics
2 answers:
Evgen [1.6K]3 years ago
6 0

Answer:

they are not equivilent

Step-by-step explanation:

Hatshy [7]3 years ago
4 0

Answer:

The answer is true.

Step-by-step explanation:

\frac{4}{6}  =  \frac{14}{21}  \\ 84 = 84

Because the last equation, 84=84, is true, then the ratios are true.

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In the diagram below, the length of the segment AB is 10, the length of segment AD is 20, and the length of segment AE is 18. Wh
DochEvi [55]
The answer is d)9. Hope it helps
4 0
3 years ago
Choose a linear function for the line representing by the point slope equation y-5=3(x-2)
Dmitry_Shevchenko [17]
Multiply 3x and -2 by 3 and add 5 to right side of equal sign to get y = -1
7 0
3 years ago
Read 2 more answers
What are the x-intercepts of the quadratic function? f(x)=x^2+6x−27 Enter your answers in the boxes. _ and _
Nastasia [14]

Answer:

(3,0) and (-9,0)

Step-by-step explanation:

6 0
2 years ago
Identify the slope and y-intercept of the function y=-5x+4 (brainlyest to correct answer)
borishaifa [10]

Answer: A. The slope is -5, and the y-intercept is (0,4)

Step-by-step explanation:

In standard form, a function is written as y = mx + b, where m = slope and b = the y-intercept

With that in mind, the m value is -5 and the b value is 4

Thus, the slope is -5, and the y-intercept is (0,4)

8 0
3 years ago
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Use the concept of volume to explain why the determinant of a 3×3 matrix A is zero if and only if A is not invertible. What must
Hatshy [7]

Answer:

See explanation below

Step-by-step explanation:

On this case what we need to proof is:

"If the matrix A is not invertible then the determinant is 0"

Let A the matrix of interest. If the matrix is not invertible then det (A) =0

Let denote the inverse of A as A^{-1}

If the matrix is not invertible we have this:

A A^{-1} =A^{-1}A \neq I

And taking determinant in both sides we get:

det(AA^{-1}) \neq det I

And using propoerties of determinants we got:

det A det A^{-1}\neq 1

A 3x3 matrix A is not invertible if and only if its columns are linearly independent.

And if the columns are linearly indpendent then the determinant is 0. And we can associate this to the volume with the following theorem

"Let  v 1 , v 2 ,..., v n  be vectors in  R n ,  let  P  be the parallelepiped determined by these vectors, and let  A  be the matrix with rows  v 1 , v 2 ,..., v n .  Then the absolute value of the determinant of  A  is the volume of  P."

And if one vector is linear dependnet we have that the detemrinant would be 0 and the matrix would not invertible

3 0
3 years ago
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