Question

Find the measure of an angle whose measure is 18 degrees less than one-half of the measure of its complement.

If x represents the measure of the angle, then which of the following expressions would equal x?

90 - (0.5x - 18)

0.5(90 - x - 18)

0.5(90 - x) - 18

Answer 1

The answer is C, 0.5(90 - x) -18

Explanation:

Answer 2

Ok let us see it this way:
If x is the measure of the angle we require
The complement is 90 - x
one half of the complement is therefore 0.5(90 - x)
18 degrees less than one half of the measure of the complement is
0.5(90 - x) -18
I hope this can be of good use