If d = k and k = 7, which statement is true? a. d > 7 b. d < 7 c. d = 7 d. d + k = 7

Historians have recently discovered a historical journal published in the early twentieth century. the journal contains facts based on original sources about the downfall of the early byzantium empire. historians consider this long-lost journal to be a breakthrough in their understanding of the byzantium empire. based on this information, the journal is a source.