K=4
add seven on both sides
2x-4y=7
add 4y on both sides
2x=7+4y
divide 2 on both sides
x=7+4y/2
plug that into original equation
2(7+4y/2)-4y-7=0
7 and 4y cancel out
2(2)=0
4=0
Answer:
c
Step-by-step explanation:
x+x=90
2x=90 ,x=45 ,∆BAD=45
Answer:
C
Step-by-step explanation:
Answer:
omg very. bored and ~stressed~
