2 years ago

Which of the following shows the correct solution steps and solution to 3x-2= -11

Mathematics

2 answers:

Montano1993 [528]2 years ago

5 0

The third one is correct

Lina20 [59]2 years ago

4 0

Answer:

the third one is correct

Step-by-step explanation:

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2 years ago

The table shows the height of a plant as it grows.

viva [34]

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144

Step-by-step explanation:

12*12

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2 years ago

Suppose that surface σ is parameterized by r(u,v)=⟨ucos(3v),usin(3v),v⟩, 0≤u≤7 and 0≤v≤2π3 and f(x,y,z)=x2+y2+z2. Set up the sur

Bad White [126]

Looks like you have most of the details already, but you're missing one crucial piece.

$\sigma$ is parameterized by

$\vec r(u,v)=\langle u\cos3v,u\sin3v,v\rangle$

for $0\le u\le7$ and $0\le v\le\frac{2\pi}3$ , and a normal vector to this surface is

$\dfrac{\partial\vec r}{\partial u}\times\dfrac{\partial\vec r}{\partial v}=\left\langle\sin3v,-\cos3v,3u\right\rangle$

with norm

$\left\|\dfrac{\partial\vec r}{\partial u}\times\dfrac{\partial\vec r}{\partial v}\right\|=\sqrt{\sin^23v+(-\cos3v)^2+(3u)^2}=\sqrt{9u^2+1}$

So the integral of $f(x,y,z)=x^2+y^2+z^2$ is

$\displaystyle\iint_\sigma f(x,y,z)\,\mathrm dA=\boxed{\int_0^{2\pi/3}\int_0^7(u^2+v^2)\sqrt{9u^2+1}\,\mathrm du\,\mathrm dv}$

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2 years ago

Y=3/2x-3

Inga [223]

Answer:

the answer is (2,-6)

Step-by-step explanation:

5 0

2 years ago

5 1/4 of what number is 42

amid [387]

Answer:

Step-by-step explanation:

5 1/4 =5.25

42/5.25 = 8

8×5.25 = 42

4 0

2 years ago

Read 2 more answers