Persevere with problems determine weather each statements is sometimes, always, or never, give ex or a counterexample

the x-coordinate of a point that lies on the x-axis is negative

One of the complementary angles is 4 degrees mor than the other. find the angles (recall that complementary angles are angles whose sum is 90 degrees.) which of the following can not be used to solve the problem if x represents one of the angles? a. 2x-4=90 b. 2x+4=90 c. x+4=90