Respuesta :

Angle B will equal 90° because it is a right angle. Angle C will equal 60° because it is the same as angle A. Therefore, to find x, you must divide 90 by 3. Get 30. Then add 30 + 90 + 60 = 180.
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Answer:

ΔABC= 90     ΔACB=  30        x=30

Step-by-step explanation:

60+3x+x=180

60+4x=180

60-60+4x=180-60

4x=120

[tex]\frac{4x}{4} =\frac{120}{4}[/tex]

x=30

Angle ABC= 3(30)

Angle ACB= (30)

Hope this helps!