Did all the stars in the universe form at around the same time?

On the map below, which of the following rivers is identified by blue? the huang he river the yangtze river the han river the naktong river

To solve this system of equations by elimination, what operation could be used to eliminate the y-variable and find the value of x? 6x + 5y = 2 4x + 2y = 8 a) subtract 2 times the second equation from 3 times the first equation b) subtract 3 times the second equation from 2 times the first equation c) subtract 5 times the second equation from 2 times the first equation d) subtract 2 times the second equation from 5 times the first equation

What geologic process is related to caldera formation?