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mr Goodwill [35]
3 years ago
6

I have 3 questions today.

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
3 0
1. 2/(3+2+1) = 2/6 = 1/3 amount of pie.
2. 81/36 = 9/4 brounises
3. 12/8 + 15/6 = 6/2 = 3 muffins
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Find the surface area of the part of the sphere x2+y2+z2=81 that lies above the cone z=x2+y2−−−−−−√
TiliK225 [7]
Parameterize the part of the sphere by

\mathbf s(u,v)=(9\cos u\sin v,9\sin u\sin v,9\cos v)

with 0\le u\le2\pi and 0\le v\le\dfrac\pi4. Then

\mathrm dS=\|\mathbf s_u\times\mathbf s_v\|=81\sin v\,\mathrm du\,\mathrm dv

So the area of S (the part of the sphere above the cone) is given by

\displaystyle\iint_S\mathrm dS=81\int_{v=0}^{v=\pi/4}\int_{u=0}^{u=2\pi}\sin v\,\mathrm du\,\mathrm dv=81(2\pi)\left(1-\dfrac1{\sqrt2}\right)=(162-81\sqrt2)\pi
4 0
4 years ago
I need help with this question pls
schepotkina [342]

Answer:

307/500

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Write x^3-11x^2 in standard form
Vika [28.1K]

Answer:

The answer is x^3 - 11x^2

Step-by-step explanation:

Write in standard form.

Hoped this helped!

brainly, please?

8 0
3 years ago
(sorry bout the other one I forgot to put the picture and it wouldn't let me delete)
Sergio039 [100]
I’m pretty sure it is.
8 0
3 years ago
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I need help with this please
KatRina [158]

Answer: a) 12

Step-by-step explanation: anything with parentheses means times (×)

5 0
3 years ago
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