900/18=50
On average, 50 students rode each bus
Hope this helps!
The answer is g) y= 27.6 and x=11
1.5y=41.4
1.5y/1.5=41.4/1.5
y=27.6
Let x be the time she ran and y be the time she walked
then distance ran = 25x and distance walked = 5y
so 15x + 5y = 42
and x + y = 4
* second equn. by -5:-
-5x - 5y = -20
add this to the first equn:0
10x = 22
x = 2.2
distance she ran = 2.2 * 15 = 33 km
Like this, (ST=QR) = (QR=ST)
Answer:
D. ![\left[\begin{array}{ccc}-12&-4\\9&3\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-12%26-4%5C%5C9%263%5Cend%7Barray%7D%5Cright%5D)
Step-by-step explanation:
In order for a matrix to be singular, the determinant has to be zero.