Which expression is equivalent to V-80?
O-4.5
O
-4./5;
4.5;
0
4.5

Your answer is: 4v5i

Step-by-step explanation:

Hope this helped : )

Step-by-step explanation:

 Given:  Δ ABC, CM⊥ AB

Now, consider  

Let In ΔCMA  H=- 10 , P= 4 , B= 2x

By, Pythagoras theorem,  

putting values we get,

⇒

⇒

⇒

which gives us and  

⇒

⇒

Now, Let In ΔCMB  H=- ? , P= 4 , B= 5√21

By, Pythagoras theorem,  

putting values we get,

⇒

⇒

⇒

⇒

Therefore,