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3 years ago

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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If y’all can help with this one it’s imagine 2 i’m trying to figure out

Sindrei [870]

Answer:

I think it would be D. I'm not sure but I think so. I thought C at first but (go to explanation)

Step-by-step explanation:

if image 1 is the original, then image 2 would be it reflected over the y axis

C says over the line y=0 which would be a horizontal line. x=0 would be a vertical line aka the y axis. I believe its D.

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3 years ago

What is the second digit of pi?

Ne4ueva [31]

1. Pi is usually referred to as 3.14, so the answer is 1

2. b) Endless

3. d) √5

4. a) 1/27

5. c) Irrational Numbers

I hope this helps! Let me know if you would like an explanation as to how I got the answers :)

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2 years ago

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Slav-nsk [51]

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2 years ago

Read 2 more answers

Бx + 4y= 18 —бх+ бу = -18

sertanlavr [38]

Answer:

x= 3

y = 0

Step-by-step explanation:

•Add the two equations to cancel out +6x and -6x

•Find the value of y

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3 years ago

If a phone cost $224 what would it cost if there was a 7% sales tax.

Annette [7]

Answer:

$239.68

Step-by-step explanation:

Given

Cost = $224
Sales Tax = 7%

Solving

Cost w/ Tax = Cost (1 + Tax)
Cost w/ Tax = 224 (1 + 0.07)
Cost w/ Tax = 224 * 1.07
Cost w/ Tax = $239.68

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2 years ago