Please help me out :( algebra II

Step-by-step explanation:

so it's a little hard to tell if they mean

or  

for for answer D  but i'll guess that they mean the latter.... also for B... it's often said... incorrectly that you can't take the square of a negative number.. but that's not exactly true.   b/c   =  i  in the  imaginary  number world.  soooo that said... I think they are assuming that you don't know you could do that.. even thou.. now you do :D   but.. B looks like the best choice

50x5=$250

step-by-step explanation:

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.