If isosceles triangle ABC has a 130° angle at vertex B, which statement must be true?

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

Uestion 1(multiple choice worth 5 points) (05.02)alex wants to paint one side of his skateboard ramp with glow-in-the-dark paint, but he needs to know how much area he is painting. calculate the area of the isosceles trapezoid. isosceles trapezoid with top base 12 feet, bottom base of 18 feet, and height of 6 feet. 72 ft2 84 ft2 90 ft2 108 ft2

What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5