Answer: Mood
Step-by-step explanation: It would be mood because when you put it in a sentence it makes the most sense.
Example Sentence: The atmosphere of the room is sad.
The mood of the room is sad.
The other answers don't make as much sense. Hope this helps!
Trapezoid:
•Can have congruent diagonals. •Has one pair of opposite, parallel sides.
Kites:
•Has congruent adjacent sides.
•Has perpendicular diagonals.
Answer:
2x+20 + x+40 = 180
Step-by-step explanation:
The angles are supplementary so they add to 180
2x+20 + x+40 = 180
Try this solution:1. to make up the characteristic equation:α²+5α=0;

2. to make up the final answer:y=C₁+C₂e⁻⁵ˣ