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Tomtit [17]
4 years ago
8

How do I solve 3a = 9

Mathematics
2 answers:
HACTEHA [7]4 years ago
8 0
3a=9

firstly, you will need to divide each side of the equal sign by 3.

3a/3=9/3

Once you divide, you end up with a=3

Hope this helped! 
Readme [11.4K]4 years ago
5 0
You divide 3 from both sides

and the answer is a=3
because 3 divided by 3 is 0
and you don't have to write it
and then 9 divided by 3 is 3
so replace the 9 with 3 and it gives you
a=3
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ludmilkaskok [199]
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\displaystyle\int_{\partial\mathcal M}\mathbf f\cdot\mathrm d\mathbf r=\iint_{\mathcal M}\nabla\times\mathbf f\cdot\mathrm d\mathbf S

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We can check this result by evaluating the equivalent surface integral. We have

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\mathrm d\mathbf S=(\mathbf s_v\times\mathbf s_u)\,\mathrm du\,\mathrm dv=\langle9\cos v\sin v,9\cos u\sin^2v,9\sin u\sin^2v\rangle\,\mathrm du\,\mathrm dv

where 0\le v\le\dfrac\pi2 and 0\le u\le2\pi. Then,

\displaystyle\iint_{\mathcal M}\nabla\times\mathbf f\cdot\mathrm d\mathbf S=\int_{v=0}^{v=\pi/2}\int_{u=0}^{u=2\pi}9\cos v\sin v\,\mathrm du\,\mathrm dv=9\pi

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