Which of the following equations below have no solutions

7friends share 4 pizzas equally how much pizza did each friend get

Describe the possible echelon forms of the standard matrix for a linear transformation t where t: set of real numbers is onto.

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.