Answer:
5
Step-by-step explanation:
If it’s a triangle then it has to equal 180
so 48+54+x=180
48+54=102
180-102=x
x=78
Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!
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5/13t= -9
Then t =( -9*13) / 5
T=-23.4
