Which number produces a rational number when added to 0.42?

Adding and subtracting matricesfind the value of each variable. x = and y = would

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?

Hello, i need compare km^2 and km. what's difference in this?