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4 years ago

11

The chimney hill neighborhood was surveyed to find out how many televisions sets were in each household. There were a total of 2

01 sets in the neighborhood and each household had an average of 3 television sets. How many households in the neighborhood were surveyed?

1 answer:

marishachu [46]4 years ago

7 0

The Answer: 67

201/3=67

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Find an expression which represents the sum of (8x+10y)

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Answer:

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Step-by-step explanation:

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We have point $P=(x_0,y_0)=(2,-4)$ , so first calculate $f'(x_0)$ . There will be:

$y=f(x)=2x^3-5x^2\\\\\\\\f'(x)=\big(2x^3-5x^2\big)'=\big(2x^3\big)'-\big(5x^2\big)'=2\big(x^3\big)'-5\big(x^2\big)'=\\\\=2\cdot3x^2-5\cdot2x=\boxed{6x^2-10x}\\\\\\\\f'(x_0)=f'(2)=6\cdot2^2-10\cdot2=6\cdot4-20=24-20=\boxed{4}$

Now, we can write the equation of the normal line as:

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Normal line (and every line) crosses x-axis when y = 0, so coordinates of A:

$\boxed{y=0}\qquad\qquad\text{and}\\\\\\y=-\dfrac{1}{4}x-\dfrac{7}{2}\\\\\\
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