Answer:
81.46
Step-by-step explanation:
Answer:
Step-by-step explanation:
One of the important things to remember about parabolas is that the vertex is directly in between the focus and the directrix. Our focus is at (4, 0) and the directrix is at (-4, 0), so that means that the vertex (h, k) is at the origin (0, 0). Another important thing to remember is that the distance between either the vertex and the focus or the vertex and the directrix is the p value, the value that tells us how stretched or compressed the parabola is. Another thing to remember is that a parabola will always wrap itself around the focus away from the directrix. So here's what we know then:
Our parabola opens to the right, the equation for that is
,
p = 4, and the vertex is (0, 0). Filling in the formula for the parabola using that info:
which simplifies a bit to
and solving it for x:

Answer:
$284.80
Step-by-step explanation:
You multiply how long she worked, 32 hours, by the amount of money she makes per hour, $8.90, to get a total of $248.80.
Answer:
x = 49
Step-by-step explanation:
- Write it out as an equation: 3x + 33 = 180
- Subtract 33 from each side, so it now looks like this: 3x = 147
- Divide each side by 3 to cancel out the 3 next to x. It should now look like this: x = 49
I hope this helps!