Answer:
25
Step-by-step explanation:
maybe this will help you
If you draw diagonal EG, then triangle EFG is congruent to triangle EHG since they have 3 congruent sides.
This means that angle FEG is congruent to angle HGE. Since the alternate angles are equal, they must be bounded by parallel lines i.e. EF is parallel to HG.
2x^2+20x=-38 divide both sides by 2
x^2+10x=-19, halve the linear coefficient, square it, than add that value to both sides of the equation, in this case add (10/2)^2=25...
x^2+10x+25=6 now the left side is a perfect square
(x+5)^2=6 take the square root of both sides
x+5=±√6 subtract 5 from both sides
x=-5±√6 (so answer c.)
The film would last until 12:15. I simply added on the one hour and fifty five minutes to find the answer.
