Can some one help me with these two problems? Step By Step.

Question

anonymous · Answer

WHAT STEP?

anonymous · Answer

attachment

anonymous · Answer

sorry i can't see it

anonymous · Answer

Find x if Line AD is a median of Triangle ABC
Find y if line AD is an altitude of Triangle ABC|dw:1389577199953:dw|

oaktree · Answer

@HelpJosh14 are you still there?

anonymous · Answer

yes

nikato · Answer

what do u know about BD and DC if AD is the median

anonymous · Answer

They are equal. Correct?

oaktree · Answer

So if AD is the median, we have that BD and DC are equal, right? So their lengths must be the same. So we have $$4x+9 = 7x-6$$Which gives us $$x=5$$Good so far?

nikato · Answer

correct. so u can set up the following equation 

4x+9=7x-6

and u can solve for x algebraically

oaktree · Answer

Nikato, I was talking to HelpJosh, but thanks for your response. XD So are you following, Josh?

nikato · Answer

wait, what? i didnt respond to u though

anonymous · Answer

How to find y

oaktree · Answer

The height of the altitude is the geometric mean of the sides it splits. So $$2y-6 = \sqrt{(4x+9)(7x-6)}$$Since you know x...can you solve now?

nikato · Answer

@OakTree  thats incorrect.. ur fidning the degrees 
so since its an altitude its perpendicular so its a right angles so

2y-6=90

oaktree · Answer

Oh, is that labelling the angle? I thought it was labelling the length of the altitude.

nikato · Answer

yea, its the anlge if u look at the original pic

anonymous · Answer

Thanks from the help from both of you guys.