pandaecat
  • pandaecat
A firecracker shoots up from a hill 150 feet high, with an initial speed of 110 feet per second. Using the formula H(t) = −16t2 + vt + s, approximately how long will it take the firecracker to hit the ground?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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pandaecat
  • pandaecat
A. 8 sec B. 9 C. 10 D.11
pandaecat
  • pandaecat
@mathmate @Vocaloid @jayzdd @jcoury @freckles
pandaecat
  • pandaecat
Does this deal with quadratic...?

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anonymous
  • anonymous
@pandaecat check ur messages
pandaecat
  • pandaecat
ok ty!
anonymous
  • anonymous
np yw
mathmate
  • mathmate
hint: solve H(t) = −16t2 + vt + s = 0 where v=110, s=150 Ignore the negative root, and round the root to the nearest second.
pandaecat
  • pandaecat
H(t)=-16t2+110t+150=0 then?
mathmate
  • mathmate
substitute v=110, s=150 and solve the resulting quadratic.
pandaecat
  • pandaecat
Oh I see! ty too
mathmate
  • mathmate
You're welcome! :)

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