Respuesta :

EPSTER1

Answer:

n=11

Step-by-step explanation:

This is a right angle, so the angles are complementary and have a sum of 90°.

[tex]4n-8+5n-1=90[/tex]

[tex]9n-9=90[/tex]

[tex]9n=99[/tex]

[tex]n=11[/tex]

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