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azamat
3 years ago
8

Multiply the following polynomial and write the resulting polynomial in descending order. (3x-8)(2x^2+4x-9)

Mathematics
1 answer:
Step2247 [10]3 years ago
7 0
(3x-8)(2x^2+4x-9)=6x^3+12x^2-27x-16x^2-32x+72=6x^3-4x^2-59x+72

Value of the coefficient of the x^3 term is \boxed{6}

Value of the coefficient of the x^2 term is \boxed{-4}

Value of the coefficient of the x term is \boxed{-59}

The value of the constant is \boxed{72}

:)
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5. A yacht is cruising at 20 knots at bearing of 185° when a 15 knot wind starts to blow at a bearing of 290°. Find the directio
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Answer:

<em>Direction of the boat is 43.05° and the speed is 21.66 knot</em>

<em></em>

Step-by-step explanation:

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wind speed = 15 knots

wind bearing = 290° = 20° above the negative horizontal x-axis

we find the x and y components of the boat velocities

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y component = -20 sin 85° = -19.92 knots

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Resultant speed of the boat = \sqrt{Vx^{2} + Vy^{2}  }

==> \sqrt{15.83^{2} + 14.79^{2}  } = <em>21.66 knot</em>

<em></em>

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