8x^2-50 is your answer hopes this helps
I plugged the numbers into a triangle area calculator, which solved it this way:

, then i multiplied it by 3 to scale it, and came up with 120 or A
Answer:
B. No, the two triangles don't have
corresponding sides marked congruent.
Answer:
3.28571428571
Step-by-step explanation:
Make Sure you round however your teach wants you too.