Total no. of students - 140 students
Total no. of students from all schools= 140+70+35+105=350
school A= 140÷350×100=40./. (multiplying by 100 because it's the total percentage )
School B = 70÷350×100=20./.
School C = 105÷350×100=30./.
School D = 105÷350×100= 10./.
Consisting all the schools percentage it gives 100./.
Hope this helps
its B
but if u are thinking its D its not because there cant be 2 and a quarter people so im sure its B
ANSWER
![\left[ { \begin {array} {cc} 10&0& | 10\\-5&-8& | 9\\ \end {array}} \right]](https://tex.z-dn.net/?f=%5Cleft%5B%20%7B%20%5Cbegin%20%7Barray%7D%20%7Bcc%7D%2010%260%26%20%7C%2010%5C%5C-5%26-8%26%20%7C%209%5C%5C%20%5Cend%20%7Barray%7D%7D%20%20%5Cright%5D%20)
EXPLANATION
The given system of equations is
10x=10
-5x-8y=9
We can rewrite this as:
10x+0y=10
-5x-8y=9
The augmented matrix is the combination of the coefficient matrix and the constant matrix.
The coefficient matrix is
![\left[ { \begin {array} {cc} 10&0\\ - 5& - 8\\ \end {array}} \right]](https://tex.z-dn.net/?f=%20%20%5Cleft%5B%20%7B%20%5Cbegin%20%7Barray%7D%20%7Bcc%7D%20%2010%260%5C%5C%20-%205%26%20-%208%5C%5C%20%5Cend%20%7Barray%7D%7D%20%20%5Cright%5D%20%20)
The constant matrix is
The augmented matrix is
![\left[ { \begin {array} {cc} 10&0& | 10\\-5&-8& | 9\\ \end {array}} \right]](https://tex.z-dn.net/?f=%5Cleft%5B%20%7B%20%5Cbegin%20%7Barray%7D%20%7Bcc%7D%2010%260%26%20%7C%2010%5C%5C-5%26-8%26%20%7C%209%5C%5C%20%5Cend%20%7Barray%7D%7D%20%20%5Cright%5D%20%20)
26% less = 74% of the original
In other word, $289 is 74% of the Original Price
629 = 74% * x
629 = .74*x
629/.74 = x
x = 850
Original price is $850
<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em><em> ❤️</em>
