Respuesta :

upandover
Hi there!

We know that each angle is equal to 90 degrees, so all we have to do is set 9y equal to 90 and solve!

WORK:
90 = 9y
y = 10

ANSWER:
C - 10

Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
JeanaShupp

Answer: C: 10

Step-by-step explanation:

Given: In the diagram, AC is perpendicular to BD.

We know that the angle mage by perpendicular lines is 90°.

Then if 9y is representing the angle made by line segments AC and BD.

then [tex]9y=90^{\circ}[/tex]

Dividing 9 on both sides of above equation, we get

[tex]y=10^{\circ}[/tex]

Hence, the value of y = 10

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