We are given a line segment with two points on each end. Rebecca draws two arcs with equal radius from each point. Now, the intersection of the two arcs is the midpoint of the line. This can be explained by the radius of the arcs. Since they are equal, meaning they have the same distance from each point. Thus, the midpoint of the line. 
        
             
        
        
        
Answer: X=30 
Hope that helped!!!
        
             
        
        
        
Answer:
The answer to your question is t = 1.3 s
Step-by-step explanation:
Data
Equation    h(t) = -4.9t² + v₀t + h₀
v₀ = 0 m/s
h₀ = 8 m
t = ?
h = 0 m
Process
1.- Substitute the values in the formula
                   0 = -4.9t² + 0t + 8
2.- Simplification
                   0 = -4.9t² + 8
3.- Solve for t
                  4.9t² = 8
                       t² = 8/4.9
                       t² = 1.63
4.- Result
                       t = 1.27 ≈ 1.3 s
 
        
             
        
        
        
Answer:
Area= 12 units squared, Perimeter= 16.12899
Step-by-step explanation:



So, perimeter= 

         
           
 