Answer:
A  40
Step-by-step explanation:
We can find angle K 
J + K + L = 180  The angles of a triangle add to 180
50 + K + 90 =180
140 +K = 180
Subtract 140 from each side
140-140 + K = 180-140
K = 40
Since the triangles are congruent
J = P
K = N
L = M
We want to find N
K = N = 40
K = N
 
        
             
        
        
        
Answer:
15:1
Step-by-step explanation:
225:15
÷15 both sides
15:1
 
        
             
        
        
        
Part A:
3.14 X (4)^2 X 3/3 
= 50.26548246
        
                    
             
        
        
        
Step-by-step explanation:
everything can be found in the picture 
 
        
             
        
        
        
Answer:
n=3
Step-by-step explanation:
64^(1/3)
Note that the exponent 1/3 given stands for the third root of the integer. 
64^(1/3) =4 
Check: 4 x 4 x 4 = 64
(By comparison of 64^(1/3) to 64^(1/n) means n= 3)
∜(64^(1/3)) =∜(4) = 1.41421356
The real number is 
 All the roots are:
1.41421356
1.41421356i
−1.41421356
−1.41421356i
4 is not a perfect 4th power.