Answer:
4x-17=31
4x+17=31+17
4x=48
4x/4=48/4
X=12
Step-by-step explanation:

The x-intercept is 5 and the y-intercept is -2
Adding in base 3 is very much like adding in base 10, but instead of carrying digits when their sum exceeds 9, we have to watch for when the sum exceeds 2:
. 112
+ 210
- - - - -
. 322 -> 1022
. 12021
+ 2122
- - - - - - -
. 14143 -> 14150 -> 14220 -> 21220
. 20001
+ 1111
- - - - - - -
. 21112
. 120021
+ 2002
- - - - - - - -
. 122023 -> 122030 -> 122100
: sign means ratio
ration can said divide mark
<span>[(8+8:8):9+(9+9:9):10-1]-1
[(8+1):9+(9+1):10-1]-1
[(9:9)+(10:10)-1]-1
[1+1-1]-1
1-1
0</span>
Step-by-step explanation:
Let the number of girls = x
Therefore, no. of boys =

Thus, no of boys in the class is 35.