Is 100/2 a rational number​

Yes, 100/2 is a rational number.

its a rational number because its written as a fraction

hope this helps

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Step-by-step explanation:

y = 15

x = 80 degrees

Step-by-step explanation:

6y = 90 (Angles on a straight line add up to 180 in which if 1 angle is 90 the other is also 90)

Dividing both sides by 6

=> y = 15

x = 180 - 100  (Angles on a straight line and it's adjacent angle is 100)

x = 80 degrees