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mamaluj [8]
3 years ago
15

What proportion could be used to solve the question? What percent of 80 is 23?

Mathematics
1 answer:
Drupady [299]3 years ago
7 0
The variable X (percentage) over 100 and 23 over 80.
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Which of the following is NOT equivalent to the nxn matrix A being invertible? A. The homogeneous system associated to A has a u
storchak [24]

Answer:

Option C

Step-by-step explanation:

  • For the matrix A of order n\times n to be invertible, its determinant must not be equal to zero, |A| \neq0, A^{- 1}  exists if- AC = CA = I, where I is identity matrix.
  1. The homogeneous equation with coefficient matrix A has a unique solution:

       AB = 0, B = A^{- 1}.0 = 0

      Thus, B = (0, 0, 0......., 0) is a unique solution

     2. The non - homogeneous equation system with coefficient matrix A has  a unique solution:

For an equation- AY = D

Y = A^{- 1}.D is a unique solution

     3. Every non homogeneous equation with coefficient matrix A is not consistent as:

For an equation- AY = D, has a solution.l Thus coefficient matrix is inconsistent whereas augmented matrix is.

      4. Rank of matrix A = n, Thus the column space of A is R^{n}

      5. Since, column space of A = R^{n}, thus x→xA is one-to-one

       

5 0
3 years ago
Show your work plzz :))))
ankoles [38]

Answer:

9/10

Step-by-step explanation:

1/6 hour for 3/20 of his yard

6/6 hour or 1 hour = 6* 3/20 = 9/10 of his yard per hour

Mark as brainliest if this helped

Mark as brainliest if this helped

6 0
3 years ago
Read 2 more answers
The length of a rectangle is 4 more than the width. The entire perimeter is 38".
Novosadov [1.4K]
L = 4 + w
perimeter = 38

38 = w + 4 + w
2w = 34
w = 17

L = 4 + 17
L = 21

i am a mathematics teacher. if anything to ask please pm me
4 0
3 years ago
162*0.967=what? {this is multiplication}
Veronika [31]

Answer:

156.654

Step-by-step explanation:

162*.967=156.654

6 0
3 years ago
Brainliest=first right:)
Nezavi [6.7K]
The answer is 1, good luck
5 0
2 years ago
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