Respuesta :

Answer:

x = 27

Step-by-step explanation:

the 2 angles form a straight line and sum to 180° , that is

3x + 9 + 90 = 180

3x + 99 = 180 ( subtract 99 from both sides )

3x = 81 ( divide both sides by 3 )

x = 27

hyltonserenity5

Answer: 3(x+3)

Step-by-step explanation: 3x+9 then factor out 3 = 3(x+3)

Otras preguntas