Answer:
SAS(SIDE ANGLE SIDE)
Step-by-step explanation
AB side in ABDA = AB side in ABDC
ABD angle in  ABDA= ABD angle in ABDC
BD side in ABDA = BD side in ABDC
 
        
             
        
        
        
Answer:
Step-by-step explanation:
hello :
the n-ieme term is : An=A1×r^(n-1)
A1 the first term       r : the common ratio
in this exercice : A1 =5       r = 125/-25=-25/5 = - 5         n = 9
A9=5×(-5)^(9-1) = 5×5^8 = 5^9     because :   ((-5)^(8)= 5^8)
 
        
             
        
        
        
Answer: 
Step-by-step explanation:
Given
The dimension of the rectangular prism is 

The volume of the prism is given by 

Therefore, the volume of the prism is  .
.
 
        
             
        
        
        
I think that the answer would be 2 if I am right 
        
                    
             
        
        
        
Answer:
- 16
Step-by-step explanation:
Average is calculated as
average = 
Thus for the given 10 numbers we have
 = - 5 ( multiply both sides by 10 )
 = - 5 ( multiply both sides by 10 )
total = - 50
let the number added be x, then
 = - 6 ( multiply both sides by 11 )
 = - 6 ( multiply both sides by 11 )
total + x = - 66, that is
- 50 + x = - 66 ( add 50 to both sides )
x = - 16
The new number is - 16