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Grace [21]
2 years ago
10

I only have a few mins, I need help with this.

Mathematics
2 answers:
Evgesh-ka [11]2 years ago
4 0

Answer:

A

Step-by-step explanation:

choose A

Kitty [74]2 years ago
3 0
The answer is a I’m pretty sure
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270

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Derive the equation of the parabola with the focus <br> is (-7,5) and the directrix of y=-11
Volgvan
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with that focus point and that directrix, the half-way over the axis of symmetry will be -7, -3, that's where the vertex is at, and notice the distance "p", is 8 units.

since the parabola is opening upwards, "p" is positive 8.

\bf \textit{parabola vertex form with focus point distance}\\\\&#10;\begin{array}{llll}&#10;4p(x- h)=(y- k)^2&#10;\\\\&#10;\boxed{4p(y- k)=(x- h)^2}&#10;\end{array}&#10;\qquad &#10;\begin{array}{llll}&#10;vertex\ ( h, k)\\\\&#10; p=\textit{distance from vertex to }\\&#10;\qquad \textit{ focus or directrix}&#10;\end{array}\\\\&#10;-------------------------------\\\\&#10;\begin{cases}&#10;h=-7\\&#10;k=-3\\&#10;p=8&#10;\end{cases}\implies 4(8)[y-(-3)]=[x-(-7)]^2&#10;\\\\\\&#10;32(y+3)=(x+7)^2\implies y+3=\cfrac{1}{32}(x+7)^2&#10;\\\\\\&#10;y=\cfrac{1}{32}(x+7)^2-3

8 0
2 years ago
Helen earns 7.50 an hour at her job but if she works more than 35 hours in a week and is paid 1 and 1/2 times her regular salary
masha68 [24]
352.50 divided by 7.50 = 47
answer = 47 Hours
6 0
3 years ago
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