Step-by-step explanation:
y+64=180
y=180-64=116°.
y=4x-28 (vertically opposite angle)
116=4x-28
116+28=4x
144=4x
x=36°.
hope this helps you.
Answer:
k=6
18=k+12
you need to isolate k so you subtract 12 from both side
6=k
280,000
10^5=100,000
2.8 x 100,000=280,000
