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rusak2 [61]
3 years ago
14

How do you solve 3 7/10-12 Fractions Fast anybody pls pls

Mathematics
2 answers:
Readme [11.4K]3 years ago
8 0
<span><span>7 / 10 = 37 / 10 

12 = 120 / 10 

37 / 10 - 12 = 37 / 10  

120 / 10 = -83 / 10 </span></span>
Marta_Voda [28]3 years ago
5 0
3 7 / 10 = 37 / 10 ;
12 = 120 / 10 ;
3 7 / 10 - 12 = 37 / 10 - 120 / 10 = - 83 / 10 ;
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Answer: The answer is

= 2(4) (4)3 (11)2

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A 1.5-mm layer of paint is applied to one side of the following surface. Find the approximate volume of paint needed. Assume tha
Mariulka [41]

Answer:

V = 63π / 200  m^3

Step-by-step explanation:

Given:

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                                 y = √(42*x - x^2)

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                           S = 2*\pi \int\limits^a_b { [f(x)*\sqrt{1 + f'(x)^2} }] \, dx

- The derivative of the function f'(x) is as follows:

                            f'(x) = \frac{21-x}{\sqrt{42x-x^2} }

- The square of derivative of f(x) is:

                            f'(x)^2 = \frac{(21-x)^2}{42x-x^2 }

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                           S = 2*\pi \int\limits^6_1 { [\sqrt{42x-x^2} *\sqrt{1 + \frac{(21-x)^2}{42x-x^2 } }] \, dx\\\\S = 2*\pi \int\limits^6_1 { [\sqrt{42x-x^2+(21-x)^2} }] \, dx\\\\S = 2*\pi \int\limits^6_1 { [\sqrt{42x-x^2+441-42x+x^2} }] \, dx\\\\S = 2*\pi \int\limits^6_1 { [\sqrt{441} }] \, dx\\S = 2*\pi \int\limits^6_1 { 21} \, dx\\\\S = 42*\pi \int\limits^6_1 { dx} \,\\\\S = 42*\pi [ 6 - 1 ]\\\\S = 42*5*\pi \\\\S = 210\pi

- The Volume of the pain coating is:

                           V = S*t

                           V = 210*π*3/2000

                          V = 63π / 200 m^3

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4 years ago
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