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
ddd [48]
3 years ago
14

Help on a and b....................

Mathematics
2 answers:
padilas [110]3 years ago
8 0
CIRCLE A 1YD = 13FT AND B
Maksim231197 [3]3 years ago
5 0
You need to show what a and b are plz
You might be interested in
What property’s allow 5=b to be written as b=5
sineoko [7]
Commutative Property allows 5=b to be written as b=5!

I hope this helped! Mark me Brainliest! :) -Raven❤️
8 0
3 years ago
Emile went out for dinner and received a bill for $32.45. He left an 18% tip How much
Hoochie [10]

Answer:

$38.29

Step-by-step explanation:

7 0
2 years ago
Which expression is the same as 10÷4?<br><br> 110 of 4<br><br> 4÷10<br><br> 110×14<br><br> 14 of 10
erica [24]

Answer:

1/4 of 10

Step-by-step explanation:

7 0
2 years ago
Problem 4: Let F = (2z + 2)k be the flow field. Answer the following to verify the divergence theorem: a) Use definition to find
Viktor [21]

Given that you mention the divergence theorem, and that part (b) is asking you to find the downward flux through the disk x^2+y^2\le3, I think it's same to assume that the hemisphere referred to in part (a) is the upper half of the sphere x^2+y^2+z^2=3.

a. Let C denote the hemispherical <u>c</u>ap z=\sqrt{3-x^2-y^2}, parameterized by

\vec r(u,v)=\sqrt3\cos u\sin v\,\vec\imath+\sqrt3\sin u\sin v\,\vec\jmath+\sqrt3\cos v\,\vec k

with 0\le u\le2\pi and 0\le v\le\frac\pi2. Take the normal vector to C to be

\vec r_v\times\vec r_u=3\cos u\sin^2v\,\vec\imath+3\sin u\sin^2v\,\vec\jmath+3\sin v\cos v\,\vec k

Then the upward flux of \vec F=(2z+2)\,\vec k through C is

\displaystyle\iint_C\vec F\cdot\mathrm d\vec S=\int_0^{2\pi}\int_0^{\pi/2}((2\sqrt3\cos v+2)\,\vec k)\cdot(\vec r_v\times\vec r_u)\,\mathrm dv\,\mathrm du

\displaystyle=3\int_0^{2\pi}\int_0^{\pi/2}\sin2v(\sqrt3\cos v+1)\,\mathrm dv\,\mathrm du

=\boxed{2(3+2\sqrt3)\pi}

b. Let D be the disk that closes off the hemisphere C, parameterized by

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

with 0\le u\le\sqrt3 and 0\le v\le2\pi. Take the normal to D to be

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

Then the downward flux of \vec F through D is

\displaystyle\int_0^{2\pi}\int_0^{\sqrt3}(2\,\vec k)\cdot(\vec s_v\times\vec s_u)\,\mathrm du\,\mathrm dv=-2\int_0^{2\pi}\int_0^{\sqrt3}u\,\mathrm du\,\mathrm dv

=\boxed{-6\pi}

c. The net flux is then \boxed{4\sqrt3\pi}.

d. By the divergence theorem, the flux of \vec F across the closed hemisphere H with boundary C\cup D is equal to the integral of \mathrm{div}\vec F over its interior:

\displaystyle\iint_{C\cup D}\vec F\cdot\mathrm d\vec S=\iiint_H\mathrm{div}\vec F\,\mathrm dV

We have

\mathrm{div}\vec F=\dfrac{\partial(2z+2)}{\partial z}=2

so the volume integral is

2\displaystyle\iiint_H\mathrm dV

which is 2 times the volume of the hemisphere H, so that the net flux is \boxed{4\sqrt3\pi}. Just to confirm, we could compute the integral in spherical coordinates:

\displaystyle2\int_0^{\pi/2}\int_0^{2\pi}\int_0^{\sqrt3}\rho^2\sin\varphi\,\mathrm d\rho\,\mathrm d\theta\,\mathrm d\varphi=4\sqrt3\pi

4 0
3 years ago
Find the quotient. 64,705 divided by 386
goldfiish [28.3K]

Answer:

167 243/386

Step-by-step explanation:

For steps, use this link:

https://mathsolver.microsoft.com/en/solve-problem/64705%20%60div%20%20386

6 0
2 years ago
Read 2 more answers
Other questions:
  • Can you help me you will have 26 point if i get the answer i need
    14·2 answers
  • there are 48 beads in a package. candice bought 4 packages of blue,9 packages of gold,6 packages of red,and 2 packages of silver
    15·2 answers
  • What is the answer plz help homework
    7·2 answers
  • What is the value of k in the equation 10k-7=7k-15
    7·1 answer
  • A survey of the mean number of cents off that coupons give was conducted by randomly surveying one coupon per page from the coup
    12·1 answer
  • What is the gcf of the following terms?
    9·2 answers
  • The sum of 1 and 3 times a number is 22. write and solve and equation to determine the number. select the solution and graph tha
    10·1 answer
  • Simplify this equation 3m + 4 = -5
    10·1 answer
  • Find the 2 angles coterminal to 1490 that have the smallest absolute value
    9·1 answer
  • Robert cuts a string that is 4 feet long into pieces that are each foot long. a. Complete the model to show 4 ÷2/6​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!