I am pretty sure 52 degrees 
 
        
                    
             
        
        
        
Answer:  From what you wrote the I think the ball is drop 
At time 0 you are 7 meters above ground 
You basically just need to solve for 
1.5 =7t-4.9t^2
by rearrange the equation you get
 4.9t^2-7t+1.5=0
by using Quadratic Formula
t=1.166s
 
        
             
        
        
        
Answer:
   right
Step-by-step explanation:
The side ratios are ...
   24 : 45 : 51 = 8 : 15 : 17
These numbers are a Pythagorean triple. The triangle is a right triangle.
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24² + 45² = 576 +2025 = 2601 = 51² . . . . the Pythagorean theorem is satisfied
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Positive integers are of the form 2n
The first term is 2 and the 130th term is 2(130)=260
The sum of this arithmetic sequence is the average of first and last terms times the number of terms
(2+260)(130/2)
17030