Step-by-step explanation:
(a + b)² = 9
(b + c)² = 25
(a + c)² = 81
Taking the square root:
a + b = ±3
b + c = ±5
a + c = ±9
By adding these three equations together and dividing both sides by 2, we get the value of a + b + c.
Possible combinations for a + b + c such that the sum is greater than or equal to 1 are:
a + b + c = (-3 + 5 + 9)/2 = 11/2
a + b + c = (3 − 5 + 9)/2 = 7/2
a + b + c = (3 + 5 + 9)/2 = 17/2
 
        
             
        
        
        
Answer: 38 feet.
Step-by-step explanation:
The equation of motion of a body thrown vertically upwards:
                                         ,
,

Substitute in formula (1) the value t=2 c:

 
        
             
        
        
        
Looking at the problem I think the answers are C, D, AND E
 
        
             
        
        
        
Answer:
It is tons 
Step-by-step explanation: That is a weight measurement
 
        
             
        
        
        
Answer: 5(√3-1) unit.
Step-by-step explanation:
Since, By the below diagram,
For triangle BDC, 
We can write,

⇒ 
⇒  
⇒ 
⇒ 
Now, In triangle ADC,

⇒ 
⇒ 
⇒ 
⇒ 
⇒ 