7x-2y+-67
<span>multiply both sides of the bottom by 4 and add </span><span>                                           5x+8y=-29 </span>
<span> 28x-8y=268</span>
  
  33x=-297
<span>   x=-9 </span>
<span>5(-9) +8y= -29 </span>
<span>-45 +8y =-29 </span>
<span>8y= 16 </span>
y=2
        
             
        
        
        
Answer:
22 minutes
Step-by-step explanation:
990/45=22 
 
        
                    
             
        
        
        
Answer:
x     =   4.712145
Step-by-step explanation:
Given a=20 and b=28,
c = 4√74 = 34.409301068171
∠α = 35.538° = 35°32'16" = 0.62025 rad
∠β = 54.462° = 54°27'44" = 0.95055 rad
Area = 280
Perimeter = 82.409301068171
<h2><u>
_____________________________________</u></h2>
Let's solve your equation step-by-step.
9x−8=34.409301
Step 1: Add 8 to both sides.
9x−8+8=34.409301+8
9x=42.409301
Step 2: Divide both sides by 9.

x=4.712145
<h2>
Answer:</h2><h2>
x=4.712145</h2>
 
        
             
        
        
        
Y/x = 9/12 = 3/4
so
y = (3/4)x . . . . . . both x and y in dollars.