anonymous
  • anonymous
FAN AND MEDAL Amir pitches a baseball at an initial height of 6 feet, with a velocity of 73 feet per second. If the batter misses, about how long does it take the ball hit the ground? Hint: Use H(t) = −16t^2 + vt + s. 4.64 seconds 2.94 seconds 2.28 seconds 0.08 second
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
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anonymous
  • anonymous
@hartnn help please!
hartnn
  • hartnn
just plug in the values given in the equation, H(t) = −16t^2 + vt + s. here s= initial height = 6 v = velocity = 73 and the height at ground level H(t) = 0 only 't' is unknown!

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hartnn
  • hartnn
you'll get a quadratic in 't' let me know if you have any doubts in solving that?
anonymous
  • anonymous
how do i find t?
hartnn
  • hartnn
did u plug in values? what did u get?
anonymous
  • anonymous
-16t^2+73t+6=0
hartnn
  • hartnn
now use quadratic formula to solve that!
hartnn
  • hartnn
Compare your quadratic equation with \(ax^2+bx+c=0\) find \[a=...?\\b=...?\\c=...?\\\] \[ \\ \sqrt{b^2-4ac}=...?\] then the two roots of x are: \(\huge{x_{1,2}=\frac{-b \pm \sqrt{b^2-4ac}}{2a}}\)
anonymous
  • anonymous
oh ok can you wait for me to solve it?
triciaal
  • triciaal
don't tag me anymore
hartnn
  • hartnn
sure, just gave you the steps :)
anonymous
  • anonymous
y? @triciaal
anonymous
  • anonymous
alright I'm almost done
anonymous
  • anonymous
is it 4.64? @hartnn
hartnn
  • hartnn
yes! correct :)
anonymous
  • anonymous
thank you!!
hartnn
  • hartnn
welcome ^_^

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