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VARVARA [1.3K]
3 years ago
15

Every orthogonal matrix is invertible. O True O False

Mathematics
1 answer:
scZoUnD [109]3 years ago
7 0

Answer:

True

Step-by-step explanation:

Every orthogonal matrix is invertible. This is a true statement.

Orthogonal matrices are square matrix whose rows and columns are orthogonal unit vectors.

In an orthogonal matrix columns are linearly independent and since the columns are linearly independent the matrix will be matrix will be invertible. This is according to invertible matrix theorem.

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Kramer Fabrications stockholders' equity at the beginning of July 2017 was $600,000. During the month, the company earned net in
Ymorist [56]

Answer:

$720,000

Step-by-step explanation:

As per the question,

Kramer Fabrications stockholders' equity at the beginning of July 2017

Stockholders' equity  = $600,000

Net income earned = $145,000

Dividends paid = $25,000

Stockholders' equity at the end of of July 2017

=  Net income - Dividend + Stockholders’ Equity

=  $145,000 - $25,000 + $600,000

=  $720,000

Therefore,

The amount of stockholders' equity at the end of of July 2017 =  $720,000.

4 0
3 years ago
PLZ HELP ASAP. What is the measure of B?
KATRIN_1 [288]

Answer:

C. 55°

Step-by-step explanation:

Note the total measurement of angles for a triangle. The total measurement of all angles in a triangle = 180°

Note that m∠C is a right angle (as shown through the square), and that right angles = 90°

Subtract to find the measurement of the unknown angle (∠B)

∠B = 180 - (∠A + ∠C)

∠B = 180 - (35 + 90)

Simplify. Combine like terms. First, add (solve parenthesis), then subtract.

∠B = 180 - (125)

∠B = 55

m∠B = C. 55°

~

7 0
3 years ago
Read 2 more answers
Point B is on the graph of the function f(x) = -3x^2. If the x-coordinate of point B is 2, which ordered pair gives the location
Oksana_A [137]
<span>f(x) = -3x^2</span>
insert x=2
y=-3*2^2
y=-3*4
y=-12
so your pair is (2,-12)
6 0
3 years ago
Ty has 230 pages of text to read in the next three days. if he averages 25 pages every 1 1/4 hours, how many hours is he going t
sineoko [7]

Answer:

11.5 hours

Step-by-step explanation:

25 pages every 75 minutes (1 1/4)

Thats means 1 page every 3 minutes (divide 25 and 75 by 25 to get this)

230 pages would mean 690 minutes (times the 3 by 230)

690/6 = 11.5

7 0
3 years ago
What is the answer?
alexgriva [62]

Answer:

Area = (2-3x)(2x+5)(x-1)

       = -6x³-5x²+21x-10

Step-by-step explanation:

6 0
3 years ago
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