Consider the diagram.

Line l is a perpendicular bisector of line segment A C. It intersects line segment A C at point B. Line l also contains point D. The length of line segment A D is 16. The length of line segment B C is 9.
What is the length of segment AB?

7
9
18
25

AB = 9

Step-by-step explanation:

Given that line, l is a perpendicular bisector of line segment AC. It intersects line segment AC at point B.

So, we can conclude that AB = BC (1)

Also given that the length of line segment BC is 9.

Now, from equation (1) we can say that, AB = 9.

Therefore, the length of segment AB is 9. (Answer)

step-by-step explanation:

just plug in each number for x and see which ones work and don't

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11