Gina Willson (all things Algebra 2014 Unit 4 congruent triangles Homework 3: Isosceles & Equilateral Triangles answers

Given: x + y = 6. if xe (-15, -6, -1), then which of the following sets of ordered pairs are solutions? © {(-15, -21), (-6, -12), (-1, -7)} [(-15, 21), (-6, , 7)} {(-15, 21), (-6, 12), (-1, -7)}

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

The pyramid shown has a square base that is 24 centimeters on each side. the slant height is 16 centimeters. what is the lateral surface area?