PLEASE HELP! this is due today!

For question 9 = 54

Step-by-step explanation:

54 + 67 = 121

67 - 54 = 13

1.)k+2x  2.)54  3.) i think is n+n=145

Step-by-step explanation:

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