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mina [271]
3 years ago
5

Select the conic section that represents the equation. y = 2x^2 + 7​

Mathematics
1 answer:
Vesnalui [34]3 years ago
8 0

Answer:

x intercept: none

y intercepts: (0, 7)

Step-by-step explanation:

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nordsb [41]

Answer:

18.66 ft/s

Step-by-step explanation:

The distance between you and the elevator is given by:

h=\sqrt{x^2+y^2}

The rate of change for the distance between you and the elevator is given by:

\frac{dh}{dt}=\frac{dh}{dy}*\frac{dy}{dt}

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Applying the chain rule:

u=x^2+y^2\\\frac{dh}{dy}=\frac{d\sqrt u}{du} *\frac{du}{dy}\\\frac{dh}{dy}=\frac{1}{2\sqrt u} *2y\\\frac{dh}{dy}=\frac{y}{\sqrt {(x^2+y^2)}}

Therefore, at x=300 and y = 500, dy/dt is:

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Someone please help. It is easy
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