Answer:
Step-by-step explanation:
Let total meal served
your answer is
180-(51+39)=
180 - 90=90°
BC =90°
4 * 45 = 180
265 - 180 = 85
85/5 = 17
They sold 17 rolls of patterned wrapping paper.
the answer is x=3
-3x=1-7
-3x=-6
-x=-6+3
-x=-3
x=3
you have two supplementary angles,
both added up=180
7y+5y=12y
12y=180y=15
angle DBC=7y=15*7=105