63
You take 180 subtract 54 and divide it by 2 that gives you the answer.
if a < 0, then the parabola opens down . The vertex is the lowest or highest point (depending on direction) on the graph of a quadratic function. Basically you will find the x value of the vertex first and then just plug that value into the function to get the y or functional value of the vertex. :)
Answer:
120 degrees
Step-by-step explanation:
180 - 60 = 120
Answer:
569
Step-by-step explanation:
hope it will help you