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4 years ago

What is the vertex of the graph of y= x ^2+4x

1 answer:

5 0

The vertex is (2,-4) because, if you do -b/2a you end up with 2 which is your x value, and then you would plug it in to get your y which is -4.
Hope this helps, I am sorry if it did not. :))

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Step-by-step explanation:

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4 years ago

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sattari [20]

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3 years ago

How do I find the value of y?

Genrish500 [490]

Answer:

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line segment BA and CD are congruent, turn them into an equation

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3 years ago

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Step-by-step explanation:

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3 years ago

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Ksju [112]

Step-by-step explanation:

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$=(\sec A - \csc A)\left(1 + \dfrac{\cos A}{\sin A} + \dfrac{\sin A}{\cos A} \right)$

$=(\sec A - \csc A)\left(1 + \dfrac{\cos^2 A + \sin^2 A}{\sin A\cos A} \right)$

$=(\sec A - \csc A)\left(\dfrac{1 + \sin A \cos A}{\sin A \cos A} \right)$

$=\left(\dfrac{\frac{1}{\cos A} - \frac{1}{\sin A}+\sin A - \cos A}{\sin A\cos A}\right)$

$=\dfrac{\sin A - \sin A \cos^2A - \cos A + \cos A\sin^2A}{(\sin A\cos A)^2}$

$=\dfrac{\sin A(1 - \cos^2A) - \cos A (1 - \sin^2 A)}{(\sin A\cos A)^2}$

$=\dfrac{\sin^3A - \cos^3A}{\sin^2A\cos^2A}$

$=\dfrac{\sin A}{\cos^2A} - \dfrac{\cos A}{\sin^2A}$

$=\left(\dfrac{1}{\cos A}\right)\left(\dfrac{\sin A}{1}\right) - \left(\dfrac{1}{\sin^2A}\right) \left(\dfrac{\cos A}{1}\right)$

$=\sec^2A\csc A - \csc^2A\sec A$

5 0

3 years ago