Answer:
y=0x+4
Step-by-step explanation:
 
        
             
        
        
        
For this case we have the following equation:
 H (t) = - 16t ^ 2 + 28t
 When the dolphin finishes a jump, then the height is equal to zero.
 We have then:
 -16t ^ 2 + 28t = 0
 We look for the roots of the polynomial:
 t1 = 0
 t2 = 1.75 s
 Therefore, the dolphin takes 1.75 seconds to make a jump.
 Answer:
 it will take for the dolphin to make one jump about:
 t = 1.75 s
        
             
        
        
        
Answer:
1. -15c - 4
2. 3x - 5
3. 14q
4. -195 + 39m
5. 55b + 130 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Approximately, 6.283..
Step-by-step explanation:
First calculate the area of the whole circle 
We have radius(r)=4 cm
Area of circle(a)=pir^2
 =pi×(4)^2
 =pi×16
 =Approximately,50.265......
A cirlce has a total of 360 degrees
Therefore,we can conclude 360 degrees=50.265...
or,1 degree=50.265/360
 1 degree=Approximately,0.139
Now,
Area for the shaded region = Area of 45 degree 
 =0.139×45=Approximately,6.283.....
Therefore,the area of the shaded region is approximately,6.283....