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aesthetickait
13.11.2021 •
Mathematics
Find g(x), where g(x) is the translation 9 units left of f(x)=x2. Write your answer in the form a(x–h)2+k, where a, h, and k are integers.
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Ответ:
(a) The density of flag is
Pounds per square foot
(b) The weight of strip is
Pounds
(c) The work is
foot-pounds
(d) The exact work by roof is 1250 foot-pounds
Step-by-step explanation:
(a) We are given a flag in the shape of a right triangle.
The total weight of flag is 250 pounds and Uniform density.
Base of the flag![=\sqrt{b^2-a^2}](/tpl/images/0068/4393/76f4e.png)
Area of the flag![=\dfrac{1}{2}\times 36\times 15 = 270](/tpl/images/0068/4393/6cf69.png)
Weight of flag = 250 pounds
Hence, The density of flag is![\dfrac{25}{27}](/tpl/images/0068/4393/dd099.png)
(b) Weight of strip which is h feet below the roof.
Length of strip![=\dfrac{36}{15}(15-h)](/tpl/images/0068/4393/39b87.png)
Width of strip![\Delta h](/tpl/images/0068/4393/35cc6.png)
Weight = Density x area
Hence, The weight of strip is![\dfrac{20}{9}(15-h)\Delta h](/tpl/images/0068/4393/cbf73.png)
(c) Work slice to move h feet above to the roof
work![=Weight\times displacement](/tpl/images/0068/4393/d625d.png)
Hence, The work is
foot-pounds
(d) Exact work on the roof by hanging flag
Hence, The exact work by roof is 1250 foot-pounds