What element of music is defined when two or more tones sound at the same time?

Solve the system of equations below.4x+y=162x + 3y = -2

Which of the following is not a characteristic of bebop? reharmonization and chord substitution common emphasis on improvised solos new repertoire created from jazz standards using new melodies general attitude of restraint, tranquility

Compare and contrast the architecture and function of the pyramid of djoser and the great pyramids at giza?