Will Give Brainliest if Correct

(a) 0

(b) -3/26

Step-by-step explanation:

(a)

We essentially plug 1 in for x and 2 in for y.

Our expression is , so making the correct substitutions yields:

So, the answer for part (a) is 0.

(b)

Again, we're now plugging in 1 for x and 5 for y:

So, the answer for part (b) is -3/26.

Step-by-step explanation:

So we have the rational expression . All we have to do is to just plug the given values for what x and y are.

135 is your answer

step-by-step explanation:

try 180 times three then divide that number by 4 (sides) to get your answer. im glad to : )

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