anonymous
  • anonymous
The number of tickets sold each day for an upcoming performance of Handel's Messiah is given by N(x)=-0.4x^2+10.4x+13, where x is the number of days since the concert was first announced. When will daily ticket sales peak? and how many tickets will be sold that day?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
is it \[.4x^2+10.4x+13\]?
anonymous
  • anonymous
find the vertex of the equation
anonymous
  • anonymous
yes

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More answers

anonymous
  • anonymous
if so max is given when \[x=\frac{-b}{2a}\] what mr orchestra said
anonymous
  • anonymous
i get -13 but i must have read it wrong . oh wait
anonymous
  • anonymous
\[-.4x^2+10.4x+13\]
anonymous
  • anonymous
\[\frac{-b}{2a}=\frac{-10.4}{2\times -.4}=13\]
anonymous
  • anonymous
then replace x by 13 and see what you get.
anonymous
  • anonymous
24.62?
anonymous
  • anonymous
11.61
anonymous
  • anonymous
not what i got
anonymous
  • anonymous
oops i forgot the - sign again!
anonymous
  • anonymous
i got 80.6 let me try again
anonymous
  • anonymous
got it twice
anonymous
  • anonymous
I will keep trying I'm not sure what I'm doing wrong

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