Answer:yo I was trying to answer anther question but I click on the wrong one sorry.....
Step-by-step explanation:
 
        
             
        
        
        
Answer:
33%
Step-by-step explanation:
25 / 75) x 100% = 33.33%
 
        
             
        
        
        
P = 2L + 2W
P = 2(2x) + 2(4x + 3) 
P = 4x + 8x + 6 
P = 12x + 6
The correct response would be D. 12x + 6.
        
             
        
        
        
Well one dm= 10 cm
12-10= 2 cm
        
             
        
        
        
Answer:
Time t = 2 seconds
It will reach the maximum height after 2 seconds
Completed question;
Amir stands on a balcony and throws a ball to his dog who is at ground level. The ball's height, in meters above the ground, after t seconds that Amir has thrown the ball is given by:
H (t) = -(t-2)^2+9
many seconds after being thrown will the ball reach its maximum height?
Step-by-step explanation:
The equation of the height!
h(t) = -(t-2)^2 + 9 = -(t^2 -4t +4) + 9
h(t) = -t^2 +4t -4+9 
h(t) = -t^2 + 4t +5
The maximum height is at dh/dt = 0
dh/dt = -2t +4 = 0
2t = 4
t = 4/2 = 2
Time t = 2 seconds
It will reach the maximum height after 2 seconds