After the first, we have 2/3 left, the second and third took 1/6 and 1/4, or 5/12 (1/6+1/4=2/12+3/12=(2+3)/12=5/12). Now, we just subtract 5/12 from 2/3, so 2/3-5/12=8/12-5/12=(8-5)/12=3/12=1/4. This means we have 1/4 of an hour left.
        
             
        
        
        
Answer:
174.19 cm3 i am not sure though.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
cos z = 35 / 37
Step-by-step explanation:
cos z is the ratio of the adjacent side of a triangle (the side adjacent to angle z to the hypotenuse:
cos z = (adj. side) / (hypotenuse)
Here we have cos z = 35 / 37
 
        
             
        
        
        
Answer:
Reaches a maximum height of 235.00 feet in 3.75 seconds.
Step-by-step explanation:
The height of the boulder, h,  in feet after t seconds is given by the function is given by :
 .....(1)
For maximum height, put 
i.e.

Put t = 3.75 in equation (1). So,

So, the boulder's maximum height is 235 feets and it takes 3.75 s to reach to its maximum height.