+0  
 
0
125
3
avatar

IF the number of seats in a row in a movie theatre is 8 more than the number of rows, and there are 884 seats, how many rows are there?

 Feb 22, 2023
 #1
avatar+118617 
+1

hint:

 

      (x+8) * x  =  884

 Feb 22, 2023
 #2
avatar+79 
+1

Continuing with Melody's excellent hint, if you need help solving it, here it is:

 

\(\begin{align*} x^2+8x-884&=0\\ x&=\dfrac{-8\pm\sqrt{64+3536}}{2}\\ x&=\dfrac{-8\pm\sqrt{3600}}{2}\\ x&=\dfrac{-8\pm60}{2}\\ x&=-4\pm30\\ x&=-34, 26 \end{align*}\)

Obviously, the answer cannot be -34 (imagine -34 rows). So the answer is 26.

 Feb 22, 2023
 #3
avatar
0

stop cheating bozo

 Feb 22, 2023

1 Online Users