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3 years ago

Need help will give brainlisit 12

Mathematics

1 answer:

motikmotik3 years ago

8 0

Answer:

Step-by-step explanation:

Questions a little small

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Hello! I need help with this problem thanks!!

Helen [10]

Answer:

10 tomato plants and

15 rose plants

Step-by-step explanation:

Let t be the no. of tomato plants,

And r the no. of rose plants

t + r = 25

t + 2r = 40

t = 25 - r

25 - r + 2r = 40

r = 15

t = 25 - 15

t = 10

8 0

3 years ago

The accompanying table shows wind speed and the corresponding wind chill factor

kompoz [17]

Answer:he accompanying table shows wind speed and the corresponding wind chill factor

when the air temperature is 29°F. Write a logarithmic regression equation for this set

of data, rounding all coefficients to the nearest thousandth. Using this equation, find

he accompanying table shows wind speed and the corresponding wind chill factor

when the air temperature is 29°F. Write a logarithmic regression equation for this set

of data, rounding all coefficients to the nearest thousandth. Using this equation, find

Step-by-step explanation:

7 0

3 years ago

Use Stokes' Theorem to evaluate S curl F · dS. F(x, y, z) = x2 sin(z)i + y2j + xyk, S is the part of the paraboloid z = 9 − x2 −

Korolek [52]

The vector field

$\vec F(x,y,z)=x^2\sin z\,\vec\imath+y^2\,\vec\jmath+xy\,\vec k$

has curl

$\nabla\times\vec F(x,y,z)=x\,\vec\imath+(x^2\cos z-y)\,\vec\jmath$

Parameterize $S$ by

$\vec s(u,v)=x(u,v)\,\vec\imath+y(u,v)\,\vec\jmath+z(u,v)\,\vec k$

where

$\begin{cases}x(u,v)=u\cos v\\y(u,v)=u\sin v\\z(u,v)=(9-u^2)\end{cases}$

with $0\le u\le3$ and $0\le v\le2\pi$ .

Take the normal vector to $S$ to be

$\dfrac{\partial\vec s}{\partial u}\times\dfrac{\partial\vec s}{\partial v}=2u^2\cos v\,\vec\imath+2u^2\sin v\,\vec\jmath+u\,\vec k$

Then by Stokes' theorem we have

$\displaystyle\int_{\partial S}\vec F\cdot\mathrm d\vec r=\iint_S(\nabla\times\vec F)\cdot\mathrm d\vec S$

$=\displaystyle\int_0^{2\pi}\int_0^3(\nabla\times\vec F)(\vec s(u,v))\cdot\left(\dfrac{\partial\vec s}{\partial u}\times\dfrac{\partial\vec s}{\partial v}\right)\,\mathrm du\,\mathrm dv$

$=\displaystyle\int_0^{2\pi}\int_0^3u^3(2u\cos^3v\sin(u^2-9)+\cos^3v\sin v+2u\sin^3v+\cos v\sin^3v)\,\mathrm du\,\mathrm dv$

which has a value of 0, since each component integral is 0:

$\displaystyle\int_0^{2\pi}\cos^3v\,\mathrm dv=0$

$\displaystyle\int_0^{2\pi}\sin v\cos^3v\,\mathrm dv=0$

$\displaystyle\int_0^{2\pi}\sin^3v\,\mathrm dv=0$

$\displaystyle\int_0^{2\pi}\cos v\sin^3v\,\mathrm dv=0$

4 0

3 years ago

A wooden object was discovered at an anthropological dig site. After conducting tests, scientists determined that there was 0.01

Sergio039 [100]

Susie iwndue isjdur Kendrick

6 0

3 years ago

Wut is the slope of the line that contains these points?

Montano1993 [528]

Answer:

-10 but its 17

Step-by-step explanation:

5 0

3 years ago