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Vadim26 [7]
3 years ago
15

Find the missing value 1/2 equals 28 over X ​

Mathematics
1 answer:
muminat3 years ago
8 0

Answer:

x = 56

Step-by-step explanation:

cross multiply. 28 times 2 and 1 times x. set them equal to each other and solve for x to get 56.

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vovikov84 [41]

S is the disk of radius 1 parallel to the x,y-plane and lying in the plane z=16. Parameterize this surface by

\vec r(u,v)=u\cos v\,\vec\imath+u\sin v\,\vec\jmath+16\,\vec k

with 0\le u\le1 and 0\le v\le2\pi. Take the normal vector to S to be

\vec r_u\times\vec r_v=u\,\vec k

(the orientation doesn't matter because this is a scalar surface integral)

Then

\displaystyle\iint_S(x-2y+z)\,\mathrm dS=\iint_S(u\cos v-2u\sin v+16)\|u\,\vec k\|\,\mathrm du\,\mathrm dv

=\displaystyle\int_0^{2\pi}\int_0^1(u^2(\cos v-2\sin v)+16u)\,\mathrm du\,\mathrm dv=\boxed{16\pi}

5 0
3 years ago
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Dima020 [189]

Answer:

1.)88

2.)124

3.)3256

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Step-by-step explanation:

5 0
3 years ago
Help me out, thanks.
fiasKO [112]
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Semmy [17]
1 ft= 12 in
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Answer:

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Step-by-step explanation:

I hope it helped you:)

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