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GuDViN [60]
4 years ago
11

Which of the following is a diagonal matrix?

Mathematics
2 answers:
IRINA_888 [86]4 years ago
5 0

A matrix is diagonal if

i\neq j \implies A_{i,j}=0

In other words, you want non-zero elements only when the indices of the row and the column are the same: the first element of the first row must be non zero, the second element of the second row must be non-zero, and so on. All other elements must be zero.

xxTIMURxx [149]4 years ago
5 0

Answer:

Option 3

Step-by-step explanation:

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Solve <img src="https://tex.z-dn.net/?f=%5Cfrac%7B2x-10%7D%7B4%7D" id="TexFormula1" title="\frac{2x-10}{4}" alt="\frac{2x-10}{4}
GREYUIT [131]
X = -1!
1. Factor out 2 from the expression : 2(x-5) / 4 = 3x
2. Reduce the fraction with 2 : x-5 / 2 = 3x
3. Multiply both sides of the equation by 2 : x-5=6x
4. Move the terms : x - 6x = 5
5. Collect like terms : -5x = 5
6. Divid both sides by -5
Hope this helps!
8 0
3 years ago
If one adult works 4 weeks per month at
Leya [2.2K]

Answer:

15.21

Step-by-step explanation:

All of the bills total to $2432.50. The person works 160 hours in a month. $2432.50 ÷ 160 = $15.20, BUT:

$15.20 × 160 = $2432, which is 50 cents short of what they need, so one extra cent in their wage will give them the amount they need.

$15.21 × 160 = $2433.60

7 0
3 years ago
in abbys grade, there 70 students. currently, 10% of them are enrolled in health. how many students are enrolled in health?​
goblinko [34]

Answer:

7 students.

Step-by-step explanation:

10% of 70 is 7.

4 0
3 years ago
Somebody please do this on paper then upload this It shouldn’t take a week for somebody to not answer something and still won’t
Svet_ta [14]

Answer:

im sorry man teach me how to do this as best as u can

7 0
3 years ago
A boxplot helps to visualize the variability of a distribution. Five statistics form a boxplot, often referred to as the five-nu
Grace [21]
The five-number summary of the box plot consists of the following values:
1) minimum
2) 1st quartile
3) median
4) 3rd quartile
5) maximum

The data between the first and third quartiles is: <span>b. 50% of the data is between the first and third quartiles </span>
6 0
4 years ago
Read 2 more answers
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