Answer:
mulltiply
Step-by-step explanation: you mulitply all
 
        
             
        
        
        
Answer:
The required answer is  
 
Therefore the number in green box should be 7.
Step-by-step explanation:
Given:
AB = 7√2 
AD = a , BD = b , DC = c , AC = d
∠B = 45°, ∠C = 30°
To Find:
c = ?
Solution:
In Right Angle Triangle ABD Sine identity we have

Substituting the values we get


Now in Triangle ADC Tangent identity we have

Substituting the values we get

The required answer is  
 
 
        
             
        
        
        
Answer. 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
1 hour and 42.8 minutes
Step-by-step explanation:
To answer this question let's call  while it takes Jenna to clean the gutters
 while it takes Jenna to clean the gutters
Let's call  while it takes John to clean the gutters
 while it takes John to clean the gutters
 h
 h
 h
 h
t = total time
g = job = 1 (clean the gutters)
The speed of each one is:
 g/ h
 g/ h
 g/h
 g/h

So:


 h
 h
Then, both together paint  of gutters for each hour.
 of gutters for each hour.
This means that it takes  hours to clean the gutters together
  hours to clean the gutters together
Finally cleaning together takes 1,714 hours or also
1 hour and 42.8 minutes