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Flauer [41]
3 years ago
14

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:
Lorico [155]3 years ago
3 0

Answer:

D i am positive

Step-by-step explanation:

You might be interested in
1) Find the missing side.
kari74 [83]

Answer:

25inch

Step-by-step explanation:

Ok so there is something called a Pythagorean theorem.

It's a²+b²=c²

It works on right triangles

C is the longest side or the side not touching the right angle

and a and b is the other 2 sides

so the missing side is 24²+7²=Missing side or c²

24²=576 and 7²= 49  

576+49=625

\sqrt{625}=25

3 0
3 years ago
14. Suppose that 1 out of every 10,000 doctors in a certain region is infected with the SARS virus; in the same region, 20 out o
hram777 [196]

Answer:

The person in the at-risk population is much more likely to actually have the disease

Step-by-step explanation:

The probability of a randomly selected doctor having the disease is 1 in 1,000 (P(I)=0.0001).

The probability that a doctor is infected with SARS, given that they tested positive is:

P(I|+)=\frac{P(I)*0.99}{P(I)*0.99+(1-P(I))*0.01}\\P(I|+)=\frac{0.0001*0.99}{0.0001*0.99+(1-0.0001)*0.01}\\P(I|+)=9.9*10^{-3}

The probability of a randomly selected person from the at-risk population having the disease is 20 in 100 (P(I)=0.20).

The probability that a person in the at-risk population is infected with SARS, given that they tested positive is:

P(I|+)=\frac{P(I)*0.99}{P(I)*0.99+(1-P(I))*0.01}\\P(I|+)=\frac{0.2*0.99}{0.2*0.99+(1-0.2)*0.01}\\P(I|+)=0.962

Therefore, the person in the at-risk population is much more likely to actually have the disease

3 0
3 years ago
Pls help me with 4 and 5​
Arada [10]
4. 3x-27 = 90
3x = 63
x = 21

5. 2x+30 = 60
2x = 30
x = 15
7 0
3 years ago
The scatter plot shows the number of passengers at a major airport over a​ 15-year period from the year 2000. About how many pas
Sliva [168]

Answer:

The answer is 65

Step-by-step explanation:

​First, determine the​ x-value that corresponds to the given year.

Since x corresponds to the number of years since​ 2000, the year 2009 corresponds to an​ x-value of 9.

​Next, find the​ y-value on the trend line that corresponds to an​ x-value of 9. The problem statement has been updated to show lines traced from the​ x-value of 9 to the trend line and then to the​ y-value.

Notice that the point​ (9,70) appears to lie on the trend line.

​Therefore, in​ 2009, approximately 70 million passengers travelled through the airport.

Question is complete.

4 0
3 years ago
6 glasses of orange juice has 360 calories what is the unit rate calories per glass?
lisabon 2012 [21]

Answer:

Step-by-step explanation:

in order to find the answer you have to divide 360 by 6 . each glass will end up having 60 calories

7 0
3 years ago
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