the answer of the question is54

Step-by-step explanation:

7.) we know,

Two angles are called complementary when their measures add to 90 degrees.

so,

let the angle 1 be x and angle 2 be x + 18 (aa given)

now,

x + x + 18° = 90°

2x = 90 - 18

2x = 72

x = 72/2 = 36

x = 36°.

angle 1 = 36°

angle 2 = x + 18 = 36 + 18 = 54°

i).

let the angles be 1x and 3x

now,

1x + 3x = 90°

4x = 90

x = 90/4 = 22.5°

angle 1 = x = 22.5°

angle 2 = 3x = 3 × 22.5 = 67.5°

Hope this answer helps you!