2x + 3 = 9      Move all terms not containing x to the right side of the equation.
2x = 6             Divide each term by 2 and simplify.
x=3
        
                    
             
        
        
        
Answer:
x = 9
Step-by-step explanation:
The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
50° is an exterior angle of the triangle, thus
38 + 4x - 24 = 50 , that is
14 + 4x = 50 ( subtract 14 from both sides )
4x = 36 ( divide both sides by 4 )
x = 9 
 
        
                    
             
        
        
        
Answer:
1, 3, 7.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
i dont kknow
Step-by-step explanation:
 
        
             
        
        
        
Answer: 27465 km/h 
Step-by-step explanation:
From the figure, let us use cosine formula to calculate the resultant displacement. 
B^2 = C^2 + A^2 - 2(A)(C) cosØ
Where C = 580km
A = 360 km
Ø = 153 degree 
Substitute all the parameters into the formula 
B^2 = 580^2 + 360^2 - 2(360)(580)cos153
B^2 = 466000 - ( - 372084.32 )
B^2 = 466000 + 372084.32
B^2 = 838084.32
Square root both sides 
B = 915.5 km
You are told to use a scale of 1 cm to 50 km.
Therefore, B = 915.5/50 = 18.3 cm
The time given are: 09:23 and 09:25.
The time difference = 25 - 23 = 2 minute. 
Convert minutes to hours 
2 minute = 2/60 = 1/30 hours 
Speed = distance/time
Speed = 915.5 ÷ 1/30
Speed = 915.5 × 30
Speed = 27465 km/h 
Or 
Convert 2 minute to second 
2 minute = 2 × 60 = 120 seconds 
Speed = distance/time 
Speed = 18.3/120
Speed = 0. 1525 cm/s