Answer:
-5.02
Step-by-step explanation:
the result becomes negative because 7.273 is less than 12.37
Answer:
0.675 m/s
Step-by-step explanation:
Let height of shadow= y,CD=x
Height of man=2 m
Speed of man= 

Therefore, 


Differentiate w.r.t t



When the man is 4 m from the building
Then, we have x=12-4=8 m

Substitute the values in above equation then, we get


Substitute the values then we get

Hence, the length of his shadow on the building decreasing at the rate 0.675 m/s.
Answer:
33<x for not being frozen water
Step-by-step explanation:
Answer: Answer is f(x) = 25x4 - 7x2 + x + 4
Step-by-step explanation: