4 is the constant varriation
Answer:
RM = 12 cm
Step-by-step explanation:

Assuming 20 is the hypotenuse cus there is no picture:




If It's not the hypotenuse:




But I find it unlikely that 20 wasn't the hypotenuse so ignore that unless it applies.
Hope this helped. :0)
Answer:
There could be many but one of them is
(m+5)(m-9)=0....
Answer:
help me and i will help you
Step-by-step explanation: