113 = 72 + m < B ( by the external angle of a triangle theorem)
Subtract 72 from both sides:-
113 - 72 = 72 - 72 + m < b
m<b = 41 degrees
B hope it helps and hope u pass your thing ur doing or whatever u doing
Y = mx + b....(5,6)
slope(m) = 5
now we sub
6 = 5(5) + b
6 = 25 + b
6 - 25 = b
- 19 = b
so ur equation is : y = 5x - 19...now we sub in 21 for x
y = 5(21) - 19
y = 105 - 19
y = 86
so when x = 21, y = 86
You should put a picture of the problem so I can help
