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HelloKitty17

  • one year ago

MEDAL FOR RIGHT ANSWER HERE!!!!!!!!!!!!!!!! A biologist created the following graph to show the relationship between the temperature of water (x), in degrees Celsius, and the number of insect larvae (y) in the water: graph of y equals minus 2 times the square of x plus 20 times x plus 400 What do the x-intercepts of the graph represent? There were 20 larvae at 0 degrees Celsius. There were 10 larvae at 0 degrees Celsius. The water has no larvae at -10 degrees Celsius and 20 degrees Celsius. The water has maximum larvae at -10 degrees Celsius and 20 degrees Celsius.

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  1. HelloKitty17
    • one year ago
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    @Mehek14

  2. mathmath333
    • one year ago
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    \(\large \color{black}{\begin{align} y=-2x^{2}+20x+400\hspace{.33em}\\~\\ \end{align}}\)

  3. HelloKitty17
    • one year ago
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    what does that mean

  4. mathmath333
    • one year ago
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    for \(x\)-intercepts set \(y=0\) and solve \(\large \color{black}{\begin{align} 0=-2x^{2}+20x+400\hspace{.33em}\\~\\ \end{align}}\)

  5. OregonDuck
    • one year ago
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    and the answer is?

  6. mathmath333
    • one year ago
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    do u know how to solve this \(\large \color{black}{\begin{align} 0=-2x^{2}+20x+400\hspace{.33em}\\~\\ \end{align}}\)

  7. OregonDuck
    • one year ago
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    no

  8. OregonDuck
    • one year ago
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    A biologist created the following graph to show the relationship between the temperature of water (x), in degrees Celsius, and the number of insect larvae (y) in the water: graph of y equals minus 2 times the square of x plus 20 times x plus 400 ..........y = -2x² + 20x + 400 What do the x-intercepts of the graph represent? ..........C) The water has no larvae at -10 degrees Celsius ................and 20 degrees Celsius.

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