Answer:

Step-by-step explanation:

The interior of a triangle = 180°
So 180° - 85° -50° = 45°
c. 45 degrees
Answer:
4√7-8
Step-by-step explanation:
Answer:
B trust me
Step-by-step explanation:
Distance = 30 mph * time
distance = 4 mph * time
distance = 30 mph * t
distance = 4 mph * (17-t)
Since distance is equal then
30 mph * t = 4 mph * (17-t)
30t = -4t + 68
34t = 68
t = 2 hours
We see the return trip time is (17 -t ) which is 15 hours.
The beginning trip time is 2 hours.
Double Check
Beginning trip = 30 miles * 2 = 60 miles
Return trip = 4 miles * 15 = 60 miles.