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Mashutka [201]
3 years ago
6

Please help!! Evaluate the determinant of the matrix.

Mathematics
1 answer:
kicyunya [14]3 years ago
5 0

i can not give the answer unless you still cannot find it after these steps but I have steps that might help

1. Set the matrix (must be square).

2. Reduce this matrix to row echelon form using elementary row operations so that all the elements below diagonal are zero.

3. Multiply the main diagonal elements of the matrix - determinant is calculated.


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Stephanie surveyed the students in her class to find out their favorite color. her results are in the table. what percent of Ste
wariber [46]
Hi there!

To solve this problem, we need to find the amount of classmates out of the entire class who did not choose blue as their favorite color and then convert it into a percentage. 

First, let's find the fraction:

Since there are 25 total people in her class, since

6 + 9 + 10 = 25

25 is the denominator of the fraction;

Since there are 16 people who did not choose blue,

6 + 10 = 16

16 is the numerator of the fraction. 

So, our fraction is 16/25. 

Now, we need to convert it into a percentage. To do this, we need to make the denominator 100 by multiplying it by a certain number, and then multiplying the numerator by that same number so the fraction stays equal:

16/25 
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So, the answer is 64% of Stephanie's classmates.

Hope this helps!
3 0
3 years ago
What is the area of this figure?​
iVinArrow [24]

Answer: To find the area of a rectangle, multiply its height by its width. For a square you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area.

6 0
3 years ago
Two companies Company A and Company B offer the same starting salary of $20,000 per year. Company A gives a raise of $1000 each
Bingel [31]
A.) A = 20000 + 1000n
B = 20000(1.04)^n

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For B, sn = a(r^n - 1)/(r - 1)
s20 = 20000((1.04)^20 - 1)/(1.04 - 1) = 20000(2.191 - 1)/0.04 = 20000(1.191)/0.04 = 23822.46 / 0.04 = $595,561.57

c.) Using a graphing calculator, it takes 18 years for the
<span>total amount earned a company B is greater that the total amount of earned at company A.</span>
5 0
3 years ago
A rectangle is 25 inches long and 13 inches wide. What is the area of the rectangle?
kvv77 [185]
32 is ur answer
sorry if its wrong
Im bad at this
5 0
3 years ago
Read 2 more answers
If it is 1pm today and school holidays officially begin on Saturday at 9 amHow many hours away are school holidays?
adell [148]

Answer:

68 hours

Step-by-step explanation:

Going by the time frame and date attached to this question, if school holidays should begin by Saturday 9 am, then from 1pm today we are 68 hours away from holiday.

3 0
3 years ago
Read 2 more answers
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