We know that vertically opposite angles are equal
Therefore, 6x-7 = 4x +23
6x -4x = 23 + 7
2x = 30
X = 30/2 = 15
Angle ABC = 6 (15) -7 =90-7 =81
Answer:
24.75 percents
Step-by-step explanation:
2.5 of cloth for each tablecloth.
15/6 is to 2.5
139, I am sorry if I'm wrong
a1=11; d=19-11=8
a17=11+(17-1)*8=11+128=139
X=6
multiply wtl
