Eand f are sets of real numbers defined as follows. e={v | v ≤ 2} f={v | v > 6} write e ∪ f and e ∩ f using interval notation. if the set is empty, write ∅. e ∪ f = ? e ∩ f = ?

Below.

Step-by-step explanation:

E ∪ F = (-∞, -2] or (6, ∞)

E ∩ F =  ∅.

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225