If the original length are multiple by 1/3 what are the new coordinates

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3

Which of the following equations are equivalent to -2m - 5m - 8 = 3 + (-7) + m? -15m = -4m -7m - 8 = m - 4 -3m - 8 = 4 - m m - 4 = -7m - 8 -8 - 7m = -4 + m -8 - 3m = 4 - m

Can anyone me get through my algebra 2 class? the only class i need to graduate..