3. How does the mass of location "Y" compare to the mass at location "X"?
A. Location y has a mass many
times larger than location x.
х
у
B. Location y has a mass only
slightly larger than location x.
C. Location x and y have the
same mass.
D. Location x has a mass twice
as large as location y.

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question

the statements that apply here about binary star system are

"have stars that might appear to wobble"

"often have one star that is brighter than other"

a binary star is a star system consisting of two stars revolving around their common barycenter. systems of two or more stars are called multiple star systems.