Answer:
ngle A=77
Angle B=103
Step-by-step explanation:
∠A+∠B=180 ( supplementary angles)
3/8 x +50+x+31=180
3/8 x+x=180-81
11/8 x=99
11x=99*8
x=(99*8)/11 =72
Angle A= 3/8 (72)+50
Angle A=27+50=77
Angle B= 72+31=103
m<a = 77
m<b= 103
m<a+m<b = 180(supplementary angles)
3x/8+50+x+31=180
3x/8+x+81=180
(3x+8x)/8=180-81
3x+8x=99*8
11x=792
x=792/11
x=72
now
m<a=3x/8+50
=(3*72)/8+50
=77
m<b=x+31
=72+31
=103
#a
#b
#c
#d
#e
#f
Same like f(2)
#g
x = 7,y = 8
(20 + x + y )/ 5 = x
4x = 20 + y
x ≥ 6
y ≥ 6
if x = 6, y = 4 No
if x = 7, y = 8 Yes!
