Each are divisible by 11 so the ratio equivalent would be 7:9
        
             
        
        
        
Answer:
103 ft. 
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
1. 30
2. 150
Step-by-step explanation:

Lets assume tan(x) = u

Now we solve for 'u'
add 1 on both sides
 , divide both sides by 3
, divide both sides by 3

Take square root on both sides

We replace tan(x) for 'u'
 
  
x = 30 because  in first quadrant
  in first quadrant
        x = 30      (tan is positive in first quadrant)
 
                                                    
   x = 150 because  in second quadrant
  in second quadrant
      tan is negative in second quadrant
 
        
             
        
        
        
Answer:
(a)  
(b) 
Step-by-step explanation:
It is given that  .
.
(a)
 
 
 
 
     ![[\because \sin x=\sin y\Rightarrow x=n\pi+(-1)^ny]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%5Csin%20x%3D%5Csin%20y%5CRightarrow%20x%3Dn%5Cpi%2B%28-1%29%5Eny%5D) 
 
(b)
 
 
 
 
 
 
         ![[\because \sin x=\dfrac{1}{\csc x}]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%5Csin%20x%3D%5Cdfrac%7B1%7D%7B%5Ccsc%20x%7D%5D)

Therefore,  .
.
 
        
             
        
        
        
Answer:
5 gallons per week
Step-by-step explanation:
He uses 1.25 gallons per 5 hrs
How many times does he use a full tank in a week?
20/5 =<u> 4 times</u>
To find the total amount of fuel used take 1.25 times 4
1.25 * 4 = 5 gallons