Identify the following in the expression below:
9x2 - 27x

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

other answer is correct. i had used the radius of the radius somehow. a website:

-60.75

step-by-step explanation:

just add the numbers then put the negative sign on it