Answer:
-54
Step-by-step explanation:

Multiply 8 by -9 and 6 by -3

Subtract
Hope this helps
plz mark brainliest
Answer:
option a 75°
Step-by-step explanation:
45°+60°+third angle=180°[by angle sum property]
105°+third angle=180°
third angle =180°-105°
third angle=75°
Take the 4 out to get 4(x^2-12.5)
54 miles per hour................