Answer:
its 6 hope it helps if not 4 do not know 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
x = 15
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°
Sum the 3 given angles and equate to 180, that is
3x - 10 + 6x + 5 + 4x - 10 = 180, simplify left side
13x - 15 = 180 ( add 15 to both sides )
13x = 195 ( divide both sides by 13 )
x = 15
 
        
             
        
        
        
Step-by-step explanation:
Question 10 :
3x + 6 = 4x – 12 ( reason: corresponding angles due to parallel lines)
simplify and get x, thus x = 18
to find 3x + 6 or 4x - 12(which is both the same),
3(18) + 6 = 60° , 4(18) - 12 = 60°
Question 11:
2x + 24 + x = 180 ( reason: interior angles due to parallel lines)
simplify again to get x, you will get x = 52
then find the individual by subbing in the value of x into the equation.
so 2x + 24 = 2(52)+24 = 128° and x = 52°
 
        
             
        
        
        
The given details are illustrations of addition and subtractions of fractions.  The scuba driver is at an elevation of  ft below the sea  level.
 ft below the sea  level.
Given that:
 --- the first dive
 --- the first dive
 ---- the additional dive
 ---- the additional dive
From the question, we understand that the diver starts at the sea level. 
This is represented with 0ft.
So, the diver's elevation (d) is calculated as follows:
 --- we use subtraction because the diver is below the sea level
 --- we use subtraction because the diver is below the sea level
So, we have:


Convert fractions

Take LCM


Reduce fraction

The above value means that the diver's elevation is at  ft below the sea  level.
 ft below the sea  level.
Read more about fractions at:
brainly.com/question/18134643