Hope this helps!, I have to have more than 20 characters so ignore this!
Answer:
Step-by-step explanation:
Let a be the length of the altitude, then from the given triangles, applying the basic proportionality theorem, we get

⇒
⇒
⇒
⇒
Thus, the length of altitude is: 12 cm.
Now, 
⇒
⇒
Also, 
⇒
⇒
Thus, the lengths of the legs of this triangle are 14.83 and 20 cm.
Answer:
21minutes
Step-by-step explanation:
its 21 minutes because 5x3=15 so 7x3=21
Answer:
sorry can you write it down and take a pic of it
please that is the only way i can answer it
Step-by-step explanation: