Nah, it's not a right triangle because, the longest side can't insitude its self
        
             
        
        
        
The answer is 3 hope this helps
        
             
        
        
        
Answer:
Rock D.
Step-by-step explanation:
We can assume that the force that the catapult does is always the same.
So, here we need to remember Newton's second law:
F = m*a
force equals mass times acceleration.
Where acceleration is the rate of change of the velocity.
So, if we want the rock to hit closer to the catapult, the rock must be less accelerated than rock B.
So, we can rewrite:
a = F/m
So, as larger is the mass of the rock, smaller will be the acceleration of the rock after it leaves the catapult (because the mass is in the denominator). So if we want to have a smaller acceleration, we need to choose a rock with a larger mass than rock B.
Assuming that the mass depends on the size, the only one that has a mass larger than rock B is rock D.
So we can assume that rock D is the correct option.
 
        
             
        
        
        
Calculater I'm pretty sure
        
                    
             
        
        
        
Answer:
5
Step-by-step explanation:
 ( divide numerator and denominator by 5 ) , then
 ( divide numerator and denominator by 5 ) , then
 =
 =  ( with missing number ? = 5 )
 ( with missing number ? = 5 )