Respuesta :

Answer:

5x+ 30 = 90

Step-by-step explanation:

Complementary angles add to 90 degrees

Add the angles together and set equal to 90

5x+ 30 = 90

Answer:

B. 5x+30 =90

Step-by-step explanation:

complementary angles are a sum of 90

so to find x you need to add up the two angles