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3 years ago

How many minutes are there in a degree? a. 180 b. 360 c. 60 d. 45

Mathematics

2 answers:

faltersainse [42]3 years ago

6 0

All of the above are incorrect. There are 6 minutes in a degree because 360/60 = 6

larisa [96]3 years ago

3 0

Thr answer is c) 60 minutes .

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3 years ago

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2 years ago

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the fee for the parking garage at the airport is $16 for the first day plus $4.50 for each additional day. which equation repres

11111nata11111 [884]

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3 years ago

If A is nonsingular, then (AT )-1 =(A-1) T . (a) Verify this theorem for 2 × 2 matrices

kipiarov [429]

Answer:

Verified

Step-by-step explanation:

Let the 2x2 matrix A be in the form of:

$\left[\begin{array}{cc}a&b\\c&d\end{array}\right]$

Where det(A) = ad - bc # 0 so A is nonsingular:

Then the transposed version of A is

$A^T = \left[\begin{array}{cc}a&c\\b&d\end{array}\right]$

Then the inverted version of transposed A is

$(A^T)^{-1} = \frac{1}{ad - cb} \left[\begin{array}{cc}a&-c\\-b&d\end{array}\right]$

The inverted version of A is:

$A^{-1} = \frac{1}{ad - bc}\left[\begin{array}{cc}a&-b\\-c&d\end{array}\right]$

The transposed version of inverted A is:

$(A^{-1})^T = \frac{1}{ad - bc}\left[\begin{array}{cc}a&-c\\-b&d\end{array}\right]$

We can see that

$(A^T)^{-1} = (A^{-1})^T$

So this theorem is true for 2 x 2 matrices

3 0

3 years ago

Please help me out if you can

Arlecino [84]

Answer:

(a, 0)

Step-by-step explanation:

Point S has the same x-coordinate as does Point R: a.

Point S has the y-coordinate 0, as Point S lies on the x-axis.

Correct final answer: (a, 0) represents Point S.

6 0

3 years ago