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3 years ago

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Marco wants to set up 12 small wind turbines with 3 blades each. If 4 wind turbine blades cost $79.74, how much will all the bla

des cost?

1 answer:

Softa [21]3 years ago

4 0

So, 4 x 3 is 12, so 4 blades cost 79.74 x 3 (because every turbine has 3 blades each) is 318.96

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Answer:

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Step-by-step explanation:

Solution:-

- The given quadratic equation is to be solved using the quadratic formula. The general form of a quadratic equation is:

$ax^2 + bx + c =0$

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- The quadratic formula is given as:

$x = \frac{-b+/-\sqrt{b^2 - 4*a*c} }{2a}$

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$x^2 + 2x - 120 = 0$

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- Solve using quadratic formula:

$x = \frac{-2+/-\sqrt{2^2 - 4*1*(-120)} }{2*1}\\\\x = \frac{-2+/-\sqrt{4 + 480} }{2}\\\\x = \frac{-2+/-(22) }{2}\\\\\\x = 10 , -12$

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3 years ago

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mamaluj [8]

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