Answer:
it is option is D
Step-by-step explanation:
Answer:
there is no solution to it as the equation isn't true (It doesn't make sense)
Step-by-step explanation:
Answer:
5:1
Step-by-step explanation:
Originally the ratio is 20:4
but then it is simplified to 10:2
then 5:1
Recall that over an appropriate domain,

Let
and
(these belong to the "appropriate domain", so the identity holds). We have

and

Then the sum telescopes, as
