which of the following sets are equal to {x | x > 9 and x < 2}
{2, 3, 4, 5, 6, 7, 8, 9}
{ }
{3, 4, 5, 6, 7, 8}
{3, 4, 5, 7, 8}
{4, 5, 6, 7, 8, 9}

  { }

Step-by-step explanation:

There are no numbers that are both greater than 9 and less than 2. The expression describes the empty set.

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

answer: the answer is fre sha voca do

step-by-step explanation: