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blondinia [14]
3 years ago
12

I only have 8 minutes left please help!!! The expression h(x)= -5x2 + 25x + 70 can be used to estimate the height(h), in meters,

of a toy rocket x seconds after it is launched from
a platform. Substitue 0 for h in the equation, and determinehow many seconds it will take for the rocket to hit the ground? Enter the
answer that makes the most real world sense for the scenario described.

Mathematics
1 answer:
rewona [7]3 years ago
8 0
Hence x is 7 seconds

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Answer:

The correct choice is (0,-3)

Step-by-step explanation:

To convert from polar coordinates to rectangular coordinates, we use the parametric equations:

x=r\cos \theta and y=r\sin \theta

The point given to us in polar coordinates is (3,\frac{3}{2}\pi).

where r=3,\theta=\frac{3\pi}{2}

x=3\cos (\frac{3\pi}{2}) and y=3\sin( \frac{3\pi}{2})

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The correct choice is (0,-3)

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Assuming you don't know the exact numbers, we can sequentially figure out the number of inches in a mile and seconds in a day

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5280*12 = 63360 inches in a mile

Seconds in a day:

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4 years ago
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sergejj [24]
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Sauron [17]

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