1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
musickatia [10]
3 years ago
8

Can you think of any 2x2 matrices d for which cd = dc for all 2x2 matrices c? give 2 different examples of such matricesd.

Mathematics
1 answer:
Ksju [112]3 years ago
6 0
For any arbitrary 2x2 matrices \mathbf C and \mathbf D, only one choice of \mathbf D exists to satisfy \mathbf{CD}=\mathbf{DC}, which is the identity matrix.

There is no other matrix that would work unless we place some more restrictions on \mathbf C. One such restriction would be to ensure that \mathbf C is not singular, or its determinant is non-zero. Then this matrix has an inverse, and taking \mathbf D=\mathbf C^{-1} we'd get equality.
You might be interested in
Is x and x2 like terms or unlike terms​
babymother [125]

Like terms" are terms whose variables (and their exponents such as the 2 in x2) are the same. In other words, terms that are "like" each other. Note: the coefficients (the numbers you multiply by, such as "5" in 5x) can be different.

4 0
3 years ago
A quadrilateral has vertices (2, 0), (0, –2), (–2, 4), and (–4, 2). Which special quadrilateral is formed by connecting the midp
HACTEHA [7]
In order to know what the polygon is, you have to plot the coordinates. After plotting, it is obviously shown a form of a rectangle. After connecting the midpoints of the sides, it formed a (D) rhombus, not a kite.
8 0
3 years ago
Jessica works between 12h and 18h per week at her part-time job. She earns $9.25 per hour. The function p(h) = 9.25h models the
Tpy6a [65]
D. All real numbers between 111 and 166.5 inclusive.

3 0
3 years ago
Please help and thank you so much in advanced
sdas [7]

x=18

y=-6

To find the x intercept, you would substitute the y with 0 and then solve for x.

To find the y intercept, you would substitute the x with 0 and solve for y.

Hope this helps braniliest please!

8 0
3 years ago
Read 2 more answers
Can someone help me out with this ? 8(1 - 8p) + 8p
goldfiish [28.3K]
8(1-8p) + 8p
8 - 64p + 8p
8 - 56p
8 = 56p
1/7 = p
6 0
2 years ago
Read 2 more answers
Other questions:
  • Can someone please find x?
    10·2 answers
  • What is AD to nearest tenth?
    9·1 answer
  • the perimeter of a rectangle is 58cm. the length is 7cm less than three times the width. find the length and width. (translate t
    11·1 answer
  • Braces are used in interval or roster notation?
    6·1 answer
  • The least common multiple of 2, 5, 6, and 9 is<br><br> A. 60.<br> B. 45.<br> C. 90.<br> D. 180.
    11·2 answers
  • Lexi answers 45 questions correctly on a test and earns a 90%. How many questions were on the test?
    12·1 answer
  • Solve Quadratic Equations (Factoring a=1)
    7·2 answers
  • HELPPP PLEASE Here are two number line diagrams.
    12·2 answers
  • PLEASE HURRY HELPE MARK BRAINLIST
    5·2 answers
  • What expression is equivalent to -3(6x+7)+4(7x+2)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!