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pickupchik [31]
3 years ago
9

The tip for excellent service in a restaurant is 20%. Micheal’s bill was $70 and he believed he recieved excellent service. How

much should he pay as the tip and how much would the total bill upon leaving.
Mathematics
1 answer:
svetoff [14.1K]3 years ago
8 0
So first, we need to find how much the tip is, which is 20% of $70. Or, 0.2*70, which equals $14. Micheal will pay $14 as tip. 
Then to find total, we add 14 to 70, which is $84, which is the total bill. 
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slega [8]

Answer:

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Where:

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a, b, c - Polynomial constants, measured in \frac{1}{m}, dimensionless and meters, respectively.

If we know that (x_{1},y_{1}) = (3\,m, 0\,m), (x_{2},y_{2}) = (8\,m, 0.05\,m) and (x_{3}, y_{3}) = (9\,m, 0\,m), this system of linear equations is presented below:

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The coefficients of the polynomial are, respectively:

a = -\frac{1}{100}, b = \frac{3}{25}, c = -\frac{27}{100}

The equation of the parabola that models the path of the long jumper through the air is y' = -\frac{1}{100}\cdot x^{2}+\frac{3}{25}\cdot x -\frac{27}{100}.

But we need y measured in centimeters, then, we use the following conversion:

y = 100\cdot y'

Then, we get that:

y = -x^{2}+12\cdot x -27

Where x and y are measured in meters and centimeters, respectively.

The equation of the parabola that models the path of the long jumper through the air is y = -x^{2}+12\cdot x -27.

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