Answer:
Step-by-step explanation:

Multiply both sides by 19

Answer:ibbhbh
Step-by-step explanation:
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Well it depends. what the problem
Answer:use a right triangle calc. On the web it does it for you and shows you how it got the answer.
Step-by-step explanation:
Answer: Variables
F and C are placeholders for numbers. They are called variables because they are allowed to vary, or change. If you change C then it affects F, and vice versa. If the values for the placeholders is not allowed to change, yet it holds a number, then it is considered a constant. In this case, we don't have constants or else the formula isn't too useful.