This triangle is not drawn to scale.
What is the the measure of angle B in the triangle? ​

40+2x-30+x+20=180degree ( being the sum of all angle of the triangle )

or, 30+3x=180degree

or, 3x=180-30=150degree

or, x=150÷3=50degree

now, put the value of x in angle B then

angleB= 2×50-30=80degree ans.

i dont know

step-by-step explanation:

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.