anonymous
  • anonymous
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?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
options. a) 1.66 units b) 4.15 units c) 5.44 units d) 6.14 units e) 7.13 units
anonymous
  • anonymous
do you have to solve this algebraically?
anonymous
  • anonymous
yes

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More answers

anonymous
  • anonymous
\(y=-0.3x^2+3x\) \(-2x + 5.5y = 19.5\) 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
  • anonymous
I don't get it
anonymous
  • anonymous
@peachpi
anonymous
  • anonymous
where are you stuck?
anonymous
  • anonymous
I solved the equation you gave me and the answer isn't one of my options
anonymous
  • anonymous
You 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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