What three-dimensional solid has 6 rectangular faces, 2 equal bases that are not rectangles, and 18 edges?

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

What is 10+10+20 about the origin the square root of a triangle.