Answer: 
Step-by-step explanation:
Given
Path is changing according to the function 
Rate of change of the elevation is given by the derivative of the function

At 

Answer: Cos13= 9/x x is about 9.2
Step-by-step explanation: cos13 =about .97 9/9.2=.97
Answer:
D
Step-by-step explanation:
we take the base as a right angled triangle with sides 6mi , 8 mi and hypotenuse 10 mi.
area of base=1/2×6×8=24 mi²
volume=base area ×height
=24×8
=192 mi³
Answer:
The correct answer would be vertical angles
Step-by-step explanation:
The answer is vertical angles because the two lines make an acute angles that are equal to each other on both sides. I hope this helped!!! Have a good day!!!