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AlladinOne [14]
3 years ago
13

How do you do number 20?

Mathematics
1 answer:
LenKa [72]3 years ago
4 0

The answer isnin the pictures

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ASAP‼️ DUE TONIGHT❕‼️
Ratling [72]

Answer:

99.95 yd

Step-by-step explanation:

Used the formulas

C=2πr

d=2r

8 0
3 years ago
Use stokes' theorem to evaluate c f · dr where c is oriented counterclockwise as viewed from above. f(x, y, z = xyi + 5zj + 7yk,
Helga [31]
The intersection can be parameterized by

C:=\mathbf r(t)=\begin{cases}x(t)=6\cos t\\y(t)=6\sin t\\z(t)=5-6\cos t\end{cases}

with 0\le t.

By Stoke's theorem, the integral of \mathbf f(x,y,z)=xy\,\mathbf i+5z\,\mathbf j+7y\,\mathbf k along C is equivalent to

\displaystyle\int_C\mathbf f(x(t),y(t),z(t))\cdot\mathrm d\mathbf r(t)=\iint_S\nabla\times\mathbf f\,\mathrm dS

where S is the region bounded by C. The line integral reduces to

\displaystyle\int_0^{2\pi}(36\sin t\cos t\,\mathbf i+(25-30\cos t)\,\mathbf j+42\sin t\,\mathbf k)\cdot(-6\sin t\,\mathbf i+6\cos t\,\mathbf j+6\sin t\,\mathbf k)\,\mathrm dt
=\displaystyle\int_0^{2\pi}(54(\cos3t-\cos t)-30(3\cos2t-5\cos t+3)+(126-126\cos2t)\,\mathrm dt
=\displaystyle\int_0^{2\pi}(36+96\cos t-216\cos2t+54\cos3t)\,\mathrm dt
=72\pi
4 0
4 years ago
If the ratio of areas is 81:1, then the ratio of the volumes is
Alchen [17]

Answer:

729:1

Step-by-step explanation:

6 0
3 years ago
Please help!!
JulsSmile [24]
Resolving horizontally .  Make  forces to the right positive 
resultant force =  70cos30-60cos60 = 60.62-60 = 0.62 lbs

resolve vertically  
resultant force =   120 sin60 - 70 sin30 = 103.92 - 35 = 68.92   lbs in downward direction

magnitude of the ressultant forsse = sqrt(68.92^2 + 0.62^2) =  68.92 lbs

direction of the force =  tan-1 (0.62 / 68.82) = 0.52 degrees east of south or  
a bearing of 
90 - 0.52  =  89.48 degrees

6 0
4 years ago
А ___is just another way of saying what we want to count<br> by on our graph.
Anvisha [2.4K]

Answer:

an axis

Step-by-step explanation:

<h3 />

4 0
4 years ago
Read 2 more answers
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