Amodel of an airplane is 8 inches long. if the actual airplane is 32 feet, find the scale of the model.

a. 8: 1
b. 4in. = 1ft
c. 1in. = 4ft
d. 1: 4

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Ответ:

rosier6244

12.05.2023

Mathematics

The functions are in y-terms, so the integrand variable will be "y", and the red one is the right-function and the blue one is the left-function, so using

$\bf \displaystyle \int\limits_{a}^{b} [right-function]~~-~~[left~function]\qquad we~get
\\\\\\
\displaystyle \int\limits_{\qquad -1.36192}^{\qquad 1.55800}~[(5-y^4)-(y^3-3y)]dy
\\\\\\
\displaystyle \int\limits_{\qquad -1.36192}^{\qquad 1.55800}~(-y^4-y^3+3y+5)dy$

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Amodel of an airplane is 8 inches long. if the actual airplane is 32 feet, find the scale of the model. a. 8: 1 b. 4in. = 1ft c. 1in. = 4ft d. 1: 4