Answer:
x=12
Step-by-step explanation:
LM + MN = LN
2x-16 + x-9 = 11
Combine like terms
3x-25=11
Add 25 to each side
3x-25+25 = 11+25
3x = 36
Divide by 3
3x/3=36/3
x = 12
1 Millimeter is the answer I hope this helps you.
The answer would be 100/3
If the perimeter equals 30 and the length is twice the width, then the length is equal to 20 and the width is equal to 10.