Question

Find line AB

Answer 1

kinda hard to find when it's invisible

Answer 2

does this help?

Answer 3

solve for AB

Answer 4

I am still confused!

Answer 5

18^2 = x(x+12) where x = AB ;)
can u solve it?

Answer 6

I am getting answers but they are not any of the options

Answer 7

hold on a sec let me get the answer for u, what is ur answer please?

Answer 8

24

Answer 9

i get 2 answers, one negative which can be ignored and the other is 12.97 or round it to 13

Answer 10

okay!that is an option! Thank you!

Answer 11

u know how to get it tho?

Answer 12

no, can you please explain

Answer 13

I used this
[ -b +- sqrt(b2 - 4ac) ] / 2a
is that what u used too?

Answer 14

hmmm wait... shoot... AC is not 12...

Answer 15

better delete it @jdoe0001 so it doesnt confuse her ;)

Answer 16

Okay! thank you!

Answer 17

@jewlzme17 the equation becomes

x^2 +12x -324 = 0

using the above formula "[ -b +- sqrt(b2 - 4ac) ] / 2a"
a = 1
b = 12
c = -324

substitue and find the 2 values for x ;)

Answer 18

x of course is what u looking for = AB

Answer 19

That is using the quadratic formula! okay! that makes it so much more easier! Thank you!

Answer 20

yw