4. angle bad is bisected by segment ac, segment
ac is perpendicular to segment bd

∠BAD=180°

Step-by-step explanation:

Given

⇒∠ACB=∠ACD=90

As given AC is perpendicular to Segment BD, And we are assuming a is any point on that segment and also given BAD is bisected by AC

Therefore BD must be a straight line

⇒∠BAD=180

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a