The reason for statement 4 is CPCTC.
Answer:
m=84
r:m = 1:7
therefore when r= 1 then M=14

I think that's how you do it
Answer:
B. subtraction property of inequality
Step-by-step explanation:
Answer: 1/5
Step-by-step explanation:
WXY = XYW ( = 41 ) ⇒ XYW is a isosceles triangle
⇒ XW = YW
⇒ 54 = 6x + 6
⇒ 6( x + 1 ) = 54
⇒ x + 1 = 9
⇒ x = 8
ok done. Thank to me :>