Answer:
The answer would be -10
Step-by-step explanation:
Reason would be that since -13 is surrounded by the symbol, you would make it positive 13, then add 17 to get 30. from there you can subtract 30 from 20 to get -10.
The numbers are 109 and 327. Hope it helps!
Check the picture below. So the ellipse looks more or less like so.
since the major axis is over the x-axis, is a horizontal ellipse, notice the "a" component length and the value for "c".

Answer:
yes I can. what is the question?