What is an example of an equation in vertex form

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

both equations and proportions are better.

a .4y4

hope this !

5.25 ounces

step-by-step explanation:

divided 3/4 and 6