Please help me out!!!!!.........

Answer:
x=50
Step-by-step explanation:
The total number of angles in a quadrilateral is 360.
set the expressions you have as equal to 360
(x+10)+3x+2x+x = 360
collect the x terms together
7X + 10 = 360
subtract the 10 to get just "x"s on one side
7X = 350
divide by 7 to get X alone
x = 50
Answer:
x = 50°
Step-by-step explanation:
Angles in a quadrilateral sum to 360°
From the angles given, we can set up an equation
( x + 10 ) + ( 3x ) + ( 2x ) + ( x ) = 360
Now we solve it
x + 10 + 3x + 2x + x = 360
(Add the like terms together)
7x + 10 = 360
( -10 from both sides)
7x = 350
( ÷ both sides by 7)
x = 50°