Answer:
-7
Step-by-step explanation:
y−x=9 ⇒ y=x+9
10+2x=−2y
5+x= -y ====== replacing y with x+9
5+x= -x-9
2x= -14
x= -7
the first box put 21 the second one put 7 then the last one put 7
Answer:
2)4 3)20 4)15
Step-by-step explanation:
12 - 8
91 - 77
75 - 60
Answer:
a- reflection across y axis
b-rotation
c- reflect over y then x axis
Step-by-step explanation: