Answer:
I have no clue
Step-by-step explanation:
1. Search online
2. Never count on me again!
Answer:
Step-by-step explanation: do you have any choices
Answer:
None of the first 4 do. so I guess the answers E.
Step-by-step explanation:
Since all the sides add up to 10x+2, that means that 10x-2-<side1>-<side2>=<side3>. Plugging it in, we have 10x-2-5x-(2x+9)=side3, and 5x-2-(2x+9)=side3, then expanding it to 5x-2-2x-9=3x-11=side3