Which system of inequalities has no solution? O
x+ 3y 20.5
X+ 3y - 2.5
x + 3y 2 0.5
X+ 3y - 2.5
x + 3y < 0.5
x + 3y 2.5

pls helppp!!

Determine whether the samples are independent or dependent. upper a data set includes the morning and evening temperature for the lasta data set includes the morning and evening temperature for the last 90 days.90 days.

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Can someone me out here and the tell me the greatest common factor