Answer:
1) A, B, C
2) D, E, F
3) Q
4) R, L(but lowercase), m, S, n
x=9
Step-by-step explanation:
x+18=2x+9
-x -x
18=x+9
-9 -9
9=x
1) cos(I)=IH/IG;
36
i multpliy 9x4=36
I hope this help