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anonymous
 one year ago
A fountain on a lake sprays water in a parabolic arch modeled by the equation y = 0.3x2 + 3x. A beam of light modeled by the equation 2x + 5.5y = 19.5 passes through the fountain to create a rainbow effect. If the beam cuts the water spray at points A and B, such that point B is at a higher level than point A, what distance from the ground level is point A?
anonymous
 one year ago
A fountain on a lake sprays water in a parabolic arch modeled by the equation y = 0.3x2 + 3x. A beam of light modeled by the equation 2x + 5.5y = 19.5 passes through the fountain to create a rainbow effect. If the beam cuts the water spray at points A and B, such that point B is at a higher level than point A, what distance from the ground level is point A?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0options. a) 1.66 units b) 4.15 units c) 5.44 units d) 6.14 units e) 7.13 units

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0do you have to solve this algebraically?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\(y=0.3x^2+3x\) \(2x + 5.5y = 19.5\) Substitute the top equation into the bottom one \[2x + 5.5(0.3x^2+3x) = 19.5\] Make one side equal to 0 and combine like terms so you can use the quadratic formula to solve for x

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0where are you stuck?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I solved the equation you gave me and the answer isn't one of my options

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You gotta show me what you did so I see if you went wrong somewhere And not for nothing, but it's not the equation I gave you. It's the equation typed in the problem statement.
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