Let us find the slopes of the two lines
ax+by=c, slope m1 = -a/b
bx-ay=c, slope m2 = b/a
m1*m2 = (-a/b)(b/a) = -1
Therefore the two lines are perpendicular so the answer is D
Answer:
81°
Step-by-step explanation:
By the outside angle theroem, we know that 2 * angle APC is differece of arcs DC and AB.
Angle APC = 27° so the difference is 54°
Arc DC = 27°, so Arc AB = 27° + 54° or 81°.
Answer:
There are 50 boys
Step-by-step explanation:
girls to boys - 2:4
so 25x2=50
Answer:
I'm taking the test right now so i'll tell you the right answer after I submit my test but for now I think it's C.
Answer:
-2, -3
Step-by-step explanation:
-2*-3=6
-2+-3=-5
