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3 years ago

Someone help me with this!

Mathematics

2 answers:

JulijaS [17]3 years ago

8 0

Answer:

Step-by-step explanation:

you have to add

Alexxx [7]3 years ago

6 0

Answer: 63 inches or the second one.

Step-by-step explanation:

You can just split it into a pentagon and a triangle then add it with a calc or by hand either way its 63

Hope this helps. -V

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zzz [600]

Answer:

2km/m

Step-by-step explanation:

6 laps = 10km

(because 3 x 2 = 6 and double 5km as well)

Distance divide time = speed

20 mins divided by 10km = 2km per minute

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3 years ago

Find the surface area of the surface given by the portion of the paraboloid z=3x2+3y2 that lies inside the cylinder x2+y2=4. (hi

natta225 [31]

Parameterize the part of the paraboloid within the cylinder - I'll call it $S$ - by

$\mathbf r(u,v)=\langle x(u,v),y(u,v),z(u,v)\rangle=\left\langle u\cos v,u\sin v,3u^2\right\rangle$

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$\displaystyle\iint_S\mathrm dS=\int_{u=0}^{u=2}\int_{v=0}^{v=2\pi}\|\mathbf r_u\times\mathbf r_v\|\,\mathrm du\,\mathrm dv$
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$=\displaystyle2\pi\int_{u=0}^{u=2}u\sqrt{1+36u^2}\,\mathrm du$

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$=\displaystyle\frac{2\pi}{72}\int_{w=1}^{w=145}\sqrt w\,\mathrm dw$
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3 years ago

BRAINLIESTTT ASAP! PLEASE HELP ME :)

Kobotan [32]

B. 25, acute
You can see it’s acute. 160 would be obtuse

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3 years ago