Question

M<9=6x and m<11=120 find the value of x so that line c is parallel to line d

15
20
30
114

please need help

Answer 1

since line c is parallel to line d
so M<9=6x and m<11=120 are corresponding angles
so M<9=6x = m<11=120 6x=120 implies x=120/6=20
the answer is 20