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anonymous

  • one year ago

will give medal Find the value of the expression 2x3 + 3y2 − 17 when x = 3 and y = 4. (5 points) 26 85 943 1,927

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  1. anonymous
    • one year ago
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    Okay so you need to substitute. You know how?

  2. anonymous
    • one year ago
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    You just insert the x=? and the y=? in for the x's and y's in the equation.

  3. anonymous
    • one year ago
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    2x3 +3y2 − 17 =2 *3*3 + 3*4*2-17 =25

  4. anonymous
    • one year ago
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    25 isn't even an answer up there

  5. welshfella
    • one year ago
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    2x3 + 3y2 − 17 x = 3 y = 4 so we have 2(3)^3 + 3(4)^2 - 17 = 54 + 48 - 17

  6. welshfella
    • one year ago
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    i've assumed that the numbers after the x an y are exponents

  7. anonymous
    • one year ago
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    So the answer would be 85

  8. welshfella
    • one year ago
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    yes

  9. anonymous
    • one year ago
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    substitute the 3 for x and 4 for y and do the math it would come out to 85

  10. anonymous
    • one year ago
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    I see now that makes total sense thank you so very much

  11. welshfella
    • one year ago
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    yw

  12. anonymous
    • one year ago
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    np

  13. anonymous
    • one year ago
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    does any body know how to do this one If the length of side a is 12 centimeters, m∠B = 36°, and m∠C = 75°, what is the length of side b? Round your response to two decimal places.

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