Consider U = {x\x is a positive integer greater than 1}.
Which is an empty set?
{x|x€ U and x is prime}
O {x|x€ U and 2x is prime}
{x|x € U and x can be written as a fraction}
{x\x € U and 2x can be written as a fraction}

in geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel. by extension, a line and a plane, or two planes, in three-dimensional euclidean space that do not share a point are said to be parallel.

the answer is 18 units because there are 18 small cubes inside the rectangle

hope this and p.s i am also in k12

step-by-step explanation: