Answer:
Step-by-step explanation:
you have two supplementary angles,
both added up=180
7y+5y=12y
12y=180y=15
angle DBC=7y=15*7=105
You know that angle DBA = 180 degrees.
Therefore you can write an equation:
7y+5y=180
12y=180
y=15
Now, you know that y = 15, you can multiply 7 * 15 = 105 degrees
18 is the greatest common factor between those
1 yard=3 feet so 100 yard=300 feet
parallel
y=3/4x+2
Multiply the equation by 8:
8y=6x+16
(8y-6x)=16
and you can clearly see that they're same
we know that s = 3, so plug it in.
P = 6(3)
P = 18
perimeter = 18 km
