You are not correct. Here's an explanation as to why: First of all, the triangle is isosceles, since it has two congruent sides that leads to the conclusion of two congruent angles, one opposite each side. This means that all three angle measurements of the triangle are x degrees, x degrees, and 40 degrees. To solve for x, add all three values together and set them equal to 180 degrees, the sum of three angles in any triangle. Your mistake is adding only one x to 40, which isn't inclusive of all three triangles. I hope this helped!
Linear decreasing
I haven't learned this is class yet, but I had a bf that taught me this
In my opinion I think it's the third one
0.8 times 1200 is 960, which is the number of people when the theatre is 80% full.
