Find the measure of ∠c if ∠a = 3/2x + 20 ∠b = 7/2x + 20 ∠c = 5/2x + 40 ∠d = 3/2x + 10 a) 65° b) 76° c) 95° d) 115°

The sum of angles is 360°
Thus:
∠A+∠B+∠C+∠D=360
(3/2x+20)+(7/2x+20)+(5/2x+40)+(3/2x+10)=360
9x+90=360
9x=270
x=30
thus
∠C = 5/2x + 40=5/2×30+40=115°

Ifound this on google “a skewed (non-symmetric) distribution is a distribution in which there is no such mirror-imaging. a "skewed right" distribution is one in which the tail is on the right side. a "skewed left" distribution is one in which the tail is on the left side. the above histogram is for a distribution that is skewed right.” i hope this you for what your looking for