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tiny-mole [99]
2 years ago
6

Do these pairs of values (x and y) represent two quantities that are

Mathematics
1 answer:
kifflom [539]2 years ago
8 0

Answer:

A

Step-by-step explanation:

Becuase 4 divided that number is 2

6 divided by 3 is 2

and so on

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Derive the equation of the parabola with a focus at (3,1) and a directrix of y = 5
serg [7]
So hmmm  check the picture below

so... the vertex is "p" distance from the focus and the directrix, thus, the vertex is really half-way between both

in this case, 2 units up from the focus or 2 units down from the directrix, and thus it lands at 3,3

now, the "p" distance is 2, however, the directrix is up, the focus point is below it, the parabola opens towards the focus point, thus, the parabola is opening downwards, and the squared variable is the "x"

because the parabola opens downwards, "p" is negative, and thus, -2

now, let's plug all those fellows in then

\bf \begin{array}{llll}
(x-{{ h}})^2=4{{ p}}(y-{{ k}})\\
\end{array}
\qquad 
\begin{array}{llll}
vertex\ ({{ h}},{{ k}})\\
{{ p}}=\textit{distance from vertex to }\\
\qquad \textit{ focus or directrix}
\end{array}\\\\
-----------------------------\\\\

\begin{cases}
h=3\\
k=3\\
p=-2
\end{cases}\implies (x-3)^2=4(-2)(y-3)\implies (x-3)^2=-8(y-3)
\\\\\\
-\cfrac{(x-3)^2}{8}=y-3\implies \boxed{-\cfrac{1}{8}(x-3)^2+3=y}

5 0
3 years ago
How is it -5/7 get it right mark the brainliest
sveta [45]

Step-by-step explanation:it a tricked question

7 0
3 years ago
What is an equation of the line that passes through the point (4,-6) and had a slope of -3
Viktor [21]

Answer:

1

Step-by-step explanation:

You just have to subtract

7 0
3 years ago
Read 2 more answers
A= 108. Reflex angle b=
Daniel [21]
I'm not sure if my answer is correct, but I think you should subtract 108 from 360 and it will equal 252
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2 years ago
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There are four numbers of which the first three are in G.P and the last three are in A.P where common difference is 6. If the fi
Natasha2012 [34]
Sorry for the messy working but this is the answer in the box. Comment if you have any questions. Sorry again for the mess. I basically used algebra to manipulate the equations for AP and GP

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3 years ago
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