Answer:
0.25
Step-by-step explanation:
Answer:
1.) ???
2.) (2x+3y)(2x-3y)=4x²-9y²
Answer:
B
Step-by-step explanation:
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