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Lynna [10]
3 years ago
10

Click on the statements that are true. All replacement matrices have determinant 1. It is impossible for a swap matrix and a sca

le matrix to have the same determinant. There is an elementary matrix whose determinant is 0. The n × n elementary matrix realizing the scaling of a single row by a factor of α has determinant α n . The determinant of any swap matrix is -1. It is impossible for a swap matrix and a replacement matrix to have the same determinant.
Mathematics
1 answer:
Ksenya-84 [330]3 years ago
8 0

Answer:

<h3>The three given statements are true as below </h3>
  • It is impossible for a swap matrix and a replacement matrix to have the same determinant
  • There is an elementary matrix whose determinant is 0.
  • The n×n elementary matrix realizing the scaling of a single row by a factor of α has determinant αn.

Step-by-step explanation:

<h3>To click on the given statements which is true :</h3><h3>The three given statements are true as below </h3>
  • It is impossible for a swap matrix and a replacement matrix to have the same determinant
  • There is an elementary matrix whose determinant is 0.
  • The n×n elementary matrix realizing the scaling of a single row by a factor of α has determinant αn.
<h3>Option 2),3) and 5) are correct</h3>
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Ecuacion de parabola con foco (-2,5) directriz en x=3
Dmitry_Shevchenko [17]

The required equation of the parabola is (y-5)² = 20(x+2)

<h3>Equation of a parabola</h3>

The standard equation of a parabola is expressed as;

(y-k)² = 4p(x-h)

where;

vertex = (h, k)

focus = (p+k, k)

directrix x = -p + h

Note that the directrix given will determine the type of the equation of a parabola

Given the following parameters

focus = (-2, 5) = (h, k)

x = -p + h

3 = p -2

p = 5

Substitute

(y-k)² = 4p(x-h)

(y-5)² = 4(5)(x-(-2))

(y-5)² = 20(x+2)

Hence the required equation of the parabola is (y-5)² = 20(x+2)

Learn more on equation of parabola here; brainly.com/question/4061870

#SPJ1

6 0
2 years ago
What decimal is represented by this expanded form?
Radda [10]
2*10000 is 20000.  

Start your expanded form with 20000.  Add 7000, add 400, add 9, add 0.3 and add 0.008:

27409.308 (answer)

6 0
4 years ago
What is the slope of the line joining (5, 9) and (−2, 9)?
uranmaximum [27]
The slope equals 0. 
Hope this helps.
5 0
4 years ago
Read 2 more answers
C is located at (12, -10). D is located at (-2, 18). What is the midpoint of CD?
Tanzania [10]

Answer:

<h2>(5,4)</h2>

Step-by-step explanation:

Let us all know that in order to find the midpoint of a segment we can use the midpoint formula

(x1+x2/2, y1+y2/2)

now let us put in the values into the formula

(-2+12/2, 18-10/2)

now lets simplify

(10/2, 8/2)

(5,4)

I hope this helped you :)

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3 years ago
PLEASE HURRY I NEED MY WORK TO BE SHOWN!!!!! 15 POINTS!!! CORRECT ANSWERS ONLY PLEASE!!!
Harlamova29_29 [7]

Answer:

f(-4) = 72, f(x + 5) = 3x² + 23x + 36

Step-by-step explanation:

f(-4) = 3(-4)² - 7(-4) - 4

      = 48 - (-28) - 4

f(-4) = 72

f(x + 5) = 3(x + 5)² - 7(x + 5) - 4

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

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f(x + 5) = 3x² + 23x + 36

4 0
3 years ago
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