Portuguese is the dominant language in which south american country?

Distance that the transcontinental railroad covered from omaha to san francisco.

Can someone me? i need to have this done as soon as possible! i'm putting 20 points on this!

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