Which of the equations
below has no solution?

A.) 2x + 4 = 9
B.) 3x = 3
C.) x+8 = x + 3
D.) x = 0

(40 points) i need some . an answer definition is appreciated as well.

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'