Simply solve for x:
-x^2 + 9 = 0 => x = 3 and x = -3;
plug x = 3 and x = -3 into the original equation you get 3 = 3 and -9 = -9, respectively;
So, the two intersecting points are (-3, -9), (3, 3).
And of course, the parabola opens down since its square term is minus.
Answer:
156.25
Step-by-step explanation:


Answer:
<h3>7/8</h3>
Step-by-step explanation:
if you finish 1/8 there are still 7/8 left
8 is 10% of 80
Convert the percentage into a decimal:

Multiply the decimal by 80:
Answer:21
Step-by-step explanation:becausebecausebecau se i know