8.7/2=q/4
multiply both sides by 4: q=8.7/2*4
multiply both sides by 2: 2q=8.7 times 4
refine the equation: 2q=34.8
multiply both sides by 10: 20q=348
Divide both sides by 20: 20q/20=348/20
refine the equation for the final answer: q=87/5
        
             
        
        
        
Answer:
5
Step-by-step explanation:
solve equation 180+92x= 250+78x
 
        
             
        
        
        
Answer:
-5y
Step-by-step explanation:
15 = 3×5
55 = 5×11
-15xyz = -1 × 3 × 5 × x × y × z
-55xy² = -1 × 5 × 11 × x × y²
-55yz = -1 × 5 × 11 × y × z
HCF = multiply all common factors with the lowest power amongst all 3 expressions
HCF = -1 × 5 × y = -5y
 
        
             
        
        
        
Answer is (4,7)
Step-by-step explanation:
 
        
             
        
        
        
Formula: n-2(180) 
n = number of sides
6-2(180) = 720 degrees