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Furkat [3]
3 years ago
11

Please help! Correct answer only, please! I need to finish this assignment this week Consider the matrix shown below: A. B. C. D

. Which matrix below represents 3 X 3 Identity Matrix (LaTeX: I_{3} I 3 ). A. B. C. D.

Mathematics
1 answer:
Makovka662 [10]3 years ago
3 0

Answer:

Option D is correct

Step-by-step explanation:

The identity matrix is the matrix, in which, the diagonal elements are 1 and all of non-diagonal elements are 0.

Hope this helps!

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polk elementary school was putting on its annual fall carnival. the school was selling 10 tickets for $1.00 or 2 tickets for 25c
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10 tickets for $1.00 is the better buy because because that would make each ticket 10cents which is cheaper
8 0
3 years ago
20 POINTS
Mashutka [201]

To find x:

ON is parallel to LM

8x - 8 = 7x + 4

-7x        -7x

1x - 8 = 4

     +8   +8

1x = 12

---    ---

1        1

x = 12

8(12) - 8 = 7(12) + 4

96 - 8 = 84 + 4

88 = 88

------------------------------------

To find y:

NM is parallel to OL

x - 5 = 3y - 6

12 - 5 = 3y - 6

7 = 3y - 6

+6      +6

13 = 3y

---    ---

3      3

13/3 = y

Check:

12 - 5 = 3(13/3) - 6

7 = 13 - 6

7 = 7



6 0
3 years ago
A major television manufacturer has determined that its 44 inch screens have a mean service life that can be modeled by a normal
Neko [114]

Answer:

P(5

And we can find this probability with thie difference:

P(-2

And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.  

P(-2

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the heights of a population, and for this case we know the distribution for X is given by:

X \sim N(6,0.5)  

Where \mu=6 and \sigma=0.5

We are interested on this probability

P(5

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(5

And we can find this probability with thie difference:

P(-2

And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.  

P(-2

5 0
3 years ago
What is this 1/4 - (-3/4)= in math
Blababa [14]

Answer:

4/4 = 1

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Ax + bx - 15 = 0;x<br> How do you solve this?
Pani-rosa [81]

Answer:

Step-by-step explanation:

ax+bx-15=0\\=> (a+b)x-15=0\\=>(a+b)x=15\\=>x=\frac{15}{(a+b)}

7 0
3 years ago
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