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
Digiron [165]
3 years ago
5

Work out the value of x.​

Mathematics
1 answer:
AlexFokin [52]3 years ago
8 0

Answer:

4.8

Step-by-step explanation:

area of rectangle = lxb = 8x

area of trapezium =  (a+b)h/2 = ( x+13)6 /2 = 3x + 39

Aea of whole figure = 91.8

8x + 3x+ 39 = 91.8

11x = 91.8-39

x= 52.8 /11 = 4.8

I hope im right! !t

You might be interested in
G verify that the divergence theorem is true for the vector field f on the region
Alenkasestr [34]
\mathbf f(x,y,z)=\langle z,y,x\rangle\implies\nabla\cdot\mathbf f=\dfrac{\partial z}{\partial x}+\dfrac{\partial y}{\partial y}+\dfrac{\partial x}{\partial z}=0+1+0=1

Converting to spherical coordinates, we have

\displaystyle\iiint_E\nabla\cdot\mathbf f(x,y,z)\,\mathrm dV=\int_{\varphi=0}^{\varphi=\pi}\int_{\theta=0}^{\theta=2\pi}\int_{\rho=0}^{\rho=6}\rho^2\sin\varphi\,\mathrm d\rho\,\mathrm d\theta\,\mathrm d\varphi=288\pi

On the other hand, we can parameterize the boundary of E by

\mathbf s(u,v)=\langle6\cos u\sin v,6\sin u\sin v,6\cos v\rangle

with 0\le u\le2\pi and 0\le v\le\pi. Now, consider the surface element

\mathrm d\mathbf S=\mathbf n\,\mathrm dS=\dfrac{\mathbf s_v\times\mathbf s_u}{\|\mathbf s_v\times\mathbf s_u\|}\|\mathbf s_v\times\mathbf s_u\|\,\mathrm du\,\mathrm dv
\mathrm d\mathbf S=\mathbf s_v\times\mathbf s_u\,\mathrm du\,\mathrm dv
\mathrm d\mathbf S=36\langle\cos u\sin^2v,\sin u\sin^2v,\sin v\cos v\rangle\,\mathrm du\,\mathrm dv

So we have the surface integral - which the divergence theorem says the above triple integral is equal to -

\displaystyle\iint_{\partial E}\mathbf f\cdot\mathrm d\mathbf S=36\int_{v=0}^{v=\pi}\int_{u=0}^{u=2\pi}\mathbf f(x(u,v),y(u,v),z(u,v))\cdot(\mathbf s_v\times\mathbf s_u)\,\mathrm du\,\mathrm dv
=\displaystyle36\int_{v=0}^{v=\pi}\int_{u=0}^{u=2\pi}(12\cos u\cos v\sin^2v+6\sin^2u\sin^3v)\,\mathrm du\,\mathrm dv=288\pi

as required.
3 0
4 years ago
What’s the area???????
AlexFokin [52]
7x12= 84
1+6=7
12=12
So the area is 84
5 0
3 years ago
How do I graph h(x) = 4|x+4| +3
Katarina [22]

Answer:

Move the point on the diagonal to (1,4) then move the vertex 4 units left and 3 units upwards

Step-by-step explanation:

4 0
2 years ago
What is the value of the expression? <br><br> 10 – 4 + (80 ÷ 20) y^4
Mariana [72]
Ok so 1st, you do the (80 ÷ 20), then you get
10-4+(4)y^4
then you 10-4
6+(4)y^4
then....
(10)y^4
so then it's 
10y^4
Unless there is a =, but if not it's 10y^4
3 0
4 years ago
(-3x+5)(2x+4) in standard form step by step
patriot [66]

Answer:

- 6 {x}^{2} -2x + 20

( - 3x + 5)(2x + 4) \\  \\  =  - 3x(2x + 4) + 5(2x + 4) \\  \\  =  - 3x(2x) - 3x(4) + 5(2x) + 5(4) \\  \\  =  - 6 {x}^{2}  - { 12x} + {10x} + 20 \\  \\  =  - 6 {x}^{2}-2x  + 20

4 0
2 years ago
Read 2 more answers
Other questions:
  • 8x=64 how do I solve this
    10·2 answers
  • At the beginning of the season, MacDonald had to remove
    10·1 answer
  • Im confused wink wink im just giving yall 60 points to say anything you want that's nice.
    13·2 answers
  • What is the unknown 3/10=x/100
    11·2 answers
  • Which geometric figure has the greatest perimeter?
    14·1 answer
  • Mr. Johnson is also comparing the two mobile phone data plans. Talk First charges $20 plus $5 per GB of data, while Mobile Plus
    9·1 answer
  • Two negative integers are 8 units apart on the number line and have a product of 308.
    10·2 answers
  • Do parallel lines that are not vertical have the same slope?<br><br><br> Yes or no
    6·1 answer
  • A rectangular piece of land is 1/4 miles long and a 1/2 mile wide what is the area of the piece of land in square miles
    6·2 answers
  • The diagram shows the molecular structure of water. A diagram representing a molecule of water is shown. There is an O at the to
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!