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apari1

  • 3 years ago

what is the x intercept of y= –16x^2 + 210x

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  1. Hero
    • 3 years ago
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    Set y = 0 and solve for x

  2. apari1
    • 3 years ago
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    i dont no how can you explain ?

  3. Hero
    • 3 years ago
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    0 = -16x^2 + 210x Solve that

  4. tasreeb
    • 3 years ago
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    y=0, -16x^2+210x x(-16x+210) x=-210/-16

  5. apari1
    • 3 years ago
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    i got x=0, 105/8

  6. apari1
    • 3 years ago
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    im assiming im wrong and @tasreeb is right

  7. Hero
    • 3 years ago
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    0 = -16x^2 + 210x 0 = -x(16x - 210) 0 = x(16x - 210) x = 0 16x - 210 = 0 16x = 210 x = 210/16 x = (0, 210/16)

  8. apari1
    • 3 years ago
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    so he was wrong also because his answers are negative, ?

  9. Hero
    • 3 years ago
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    -210/-16 = 210/16

  10. Hero
    • 3 years ago
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    -/- = +

  11. apari1
    • 3 years ago
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    oh ya cause two negaties equal a positive lol sorry brain stub !

  12. tasreeb
    • 3 years ago
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    x=0, x=210/16

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