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Shadowlugia
INeedScissors61
Vampire
Joined: 17 Apr 2007
Posts: 4958
HP: 74 MP: 2 Lives: 0
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 Posted: Sun Jan 25, 2009 12:21 pm
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OK, my school handed out packets from the state on what we're supposed to know math-wise so far. Only thing is... I don't know any of it. and we are FORBIDDEN to skip a single answer. So, how bout you guys gimme a hand?
The height, in feet, of a missile is given by H = 1600t - 16t^2 and t is the time in seconds.
A. what is the max height?
B. At what time does it reach max height?
C. At what time does the missile hit the ground. |
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? Block
Fancy Wario
Joined: 18 Apr 2007
Posts: 13463
HP: 69 MP: 8 Lives: 1
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| Posted: Sun Jan 25, 2009 2:39 pm
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Dude, are you serious? I suck at math and I know this.
A quadratic function is modeled with y = ax^2 + bx + c.
The vertex is -b / 2a.
Figure the rest out for yourself. For c, you just need to know how to factor it. |
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How deliciously sexual
Emil
Vampire
Joined: 26 Aug 2007
Posts: 1948
HP: 100 MP: 2 Lives: 0
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| Posted: Sun Jan 25, 2009 2:43 pm
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I'm not sure if you'll need it, but if you understand the formula ? Block said, you can use the Quadratic formula.
y= -b plus or minus the square root of b^2 minus 4 times a times c over, (Divided by) 2a. |
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Poison
Super Postman
Jailed Vampire
Joined: 18 Apr 2007
Posts: 6363
HP: 100 MP: 10 Lives: 11
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| Posted: Sun Jan 25, 2009 2:46 pm
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Remember kids, Cheat at math!
you probably wont use it in real life =3 |
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Shadowlugia
INeedScissors61
Vampire
Joined: 17 Apr 2007
Posts: 4958
HP: 74 MP: 2 Lives: 0
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| Posted: Sun Jan 25, 2009 3:38 pm
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| Poison wrote: | Remember kids, Cheat at math!
you probably wont use it in real life =3 |
that's what I did!
turns out there's a whole site of answers from the packet. |
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