1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
inn [45]
3 years ago
15

Which equation is a true proportion?

Mathematics
2 answers:
Svetllana [295]3 years ago
7 0

Answer:

you need to put a picture or type the equations of the proportion cause nobody will know what you mean

Step-by-step explanation:

which equation is a true proportion

what are the equations?

Lelechka [254]3 years ago
7 0
What are the equations
Lmk if this helped
Give me the equation and I’ll help!!!
You might be interested in
-2/5n = -30<br> What does n=
STatiana [176]
N= 75 (let me know if you need more help)
5 0
3 years ago
Read 2 more answers
1 in = 12 ft
harkovskaia [24]

Answer:

c 2.00 in vec ay se the back yard

8 0
2 years ago
Please answer this!!!!!!!
aivan3 [116]

Answer:

-4

Step-by-step explanation:

Rewrite  16 as 4 squared

Pull terms out from under the radical, assuming positive real numbers

-1 x 4

Then you get the answer -4

4 0
3 years ago
Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of
tresset_1 [31]

Because I've gone ahead with trying to parameterize S directly and learned the hard way that the resulting integral is large and annoying to work with, I'll propose a less direct approach.

Rather than compute the surface integral over S straight away, let's close off the hemisphere with the disk D of radius 9 centered at the origin and coincident with the plane y=0. Then by the divergence theorem, since the region S\cup D is closed, we have

\displaystyle\iint_{S\cup D}\vec F\cdot\mathrm d\vec S=\iiint_R(\nabla\cdot\vec F)\,\mathrm dV

where R is the interior of S\cup D. \vec F has divergence

\nabla\cdot\vec F(x,y,z)=\dfrac{\partial(xz)}{\partial x}+\dfrac{\partial(x)}{\partial y}+\dfrac{\partial(y)}{\partial z}=z

so the flux over the closed region is

\displaystyle\iiint_Rz\,\mathrm dV=\int_0^\pi\int_0^\pi\int_0^9\rho^3\cos\varphi\sin\varphi\,\mathrm d\rho\,\mathrm d\theta\,\mathrm d\varphi=0

The total flux over the closed surface is equal to the flux over its component surfaces, so we have

\displaystyle\iint_{S\cup D}\vec F\cdot\mathrm d\vec S=\iint_S\vec F\cdot\mathrm d\vec S+\iint_D\vec F\cdot\mathrm d\vec S=0

\implies\boxed{\displaystyle\iint_S\vec F\cdot\mathrm d\vec S=-\iint_D\vec F\cdot\mathrm d\vec S}

Parameterize D by

\vec s(u,v)=u\cos v\,\vec\imath+u\sin v\,\vec k

with 0\le u\le9 and 0\le v\le2\pi. Take the normal vector to D to be

\vec s_u\times\vec s_v=-u\,\vec\jmath

Then the flux of \vec F across S is

\displaystyle\iint_D\vec F\cdot\mathrm d\vec S=\int_0^{2\pi}\int_0^9\vec F(x(u,v),y(u,v),z(u,v))\cdot(\vec s_u\times\vec s_v)\,\mathrm du\,\mathrm dv

=\displaystyle\int_0^{2\pi}\int_0^9(u^2\cos v\sin v\,\vec\imath+u\cos v\,\vec\jmath)\cdot(-u\,\vec\jmath)\,\mathrm du\,\mathrm dv

=\displaystyle-\int_0^{2\pi}\int_0^9u^2\cos v\,\mathrm du\,\mathrm dv=0

\implies\displaystyle\iint_S\vec F\cdot\mathrm d\vec S=\boxed{0}

8 0
3 years ago
Can someone please explain to me where my teacher got the -3x - 15y = -135 from? I understand how to do this but I have no idea
Phoenix [80]

Answer:

she got those numbers from the  angles angle shape

Step-by-step explanation:

im middle school and i dont know how to solve this but i see its not that completad

6 0
3 years ago
Other questions:
  • Check each solution. Number 11
    8·1 answer
  • It costs $7.00 to purchase a
    10·2 answers
  • Multiple-Choice The average distance
    6·1 answer
  • Find the unit rate: 297 words in 5.5 minutes
    8·1 answer
  • What is the sum of the series? Write in expanded form making sure to show all steps used to find the sum.
    13·1 answer
  • What is the value of x in the parallelogram below?
    12·1 answer
  • An engineer makes 135,500 a year. She must pay 22% in federal income taxes at the end of the year. How much income tax is she pa
    13·2 answers
  • Write the number in 2 equivalent forms as a fraction, decimal, or percent.
    5·1 answer
  • If sine Theta is less than 0 and tan Theta is greater than 0 then​
    9·1 answer
  • The area of a triangle is 162 square meters. the height is 18 meters. what is the base
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!