Answer:
x=8
Step-by-step explanation:
I think you mean find x, not m.
since angle DEG and angle GEF are a linear pair, they equal 180º.
18x-9 + 4x+13 = 180
22x + 4 = 180
subtract 4 from each side
22x = 176
divide each side by 22
x=8
Answer:
295
Step-by-step explanation:
.3 x 295 = 88.5
295 - 88.5 = 206.5
Area will change by a factor of 3.5² = 12.25