The average speed is the ratio between the distance covered, and the time elapsed to cover that distance.
The total distance is the sum of the three distances covered:

Similarly, the total time elapsed is

So, althought you didn't always travelled with the same speed, you globally covered 170km in 1.75 hours. This leads to an average speed of

Answer:
8n
Step-by-step explanation:
8n is the factor of both 8 and n. in the following question. Factor ⇒ If a number, that use to divide another number and we get zero as a remainder, the number is called the factor of another number.
tan 44 = h/ x
x = 15 ft * sin 26
so
h = x * tan 44
= (15 ft * sin 26) (tan 44 )
so the anser is D
hope this would help you
The answer would be -5 1/4