C. 51* I am pretty sure is it
Answer:
C
Step-by-step explanation:
We can easily rule out B and D because they have dotted lines and both equations are greater than or equal to and less than or equal to.
Answer:0
Step-by-step explanation:
(0)0.342-0=0.9397(0)
0=0
sin 20= 0.342
cos 20=0.9397
The area of a triangle is

. solving for h (height) we get:
Let the time to hike up the hill = t
As given that the total time time up and down is 3 hrs, therefore
The time down the hill = 3-t
The distance up and down is the same.
Distance = speed * time



t=1.8
Hence, time taken to uphill = 1.8 hours
Time taken to down hill = 3-18 = 1.2 hours