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Tresset [83]
3 years ago
8

26. 50 students sit in a class room. Each student

Mathematics
1 answer:
Gnom [1K]3 years ago
8 0
<h2><em>each student requires 9m² of floor  </em></h2><h2><em>and given the no. of students is 50 </em></h2><h2><em>So the total area of the room is 9m²X50=450m² </em></h2><h2><em>Given the length of the room is 25m </em></h2><h2><em>so the Breadth is =450/25=18m </em></h2><h2><em> </em></h2><h2><em>each student requires 108m³ of space  </em></h2><h2><em>so total volume of the room is 108X50=5400m³ </em></h2><h2><em>we know that : Volume=Area X h </em></h2><h2><em>                      so⇒5400=450Xh </em></h2><h2><em>                          ⇒h=5400/450=  12m</em></h2><h2><em /></h2><h2><em>HOPE IT HELPS (◕‿◕✿)</em></h2>
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PLeAsE sEnD hElP !!!!!!!!!!!!!!!!
Luba_88 [7]

Answer:

5 units

Step-by-step explanation:

If DG, EG and FG are perpendicular bisectors of the sides of triangle ABC, then point G is the circumcenter of the triangle ABC and

BG = AG = CG as radii of the circumcirle.

Consider right triangle BEG. By the Pythagorean theorem,

BG^2=EG^2+BE^2\\ \\BG^2=4^2+3^2\\ \\BG^2 =16+9\\ \\BG^2=25\\ \\BG=5\ units

This gives us that

AG = BG = 5 units

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2 years ago
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nexus9112 [7]
It is 9 because 11 minus 2 is equal to 9.
3 0
3 years ago
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F(x, y, z) = yzexzi + exzj + xyexzk,
Ghella [55]
\nabla f(x,y,z)=\mathbf F(x,y,z)\iff\dfrac{\partial f}{\partial x}\,\mathbf i+\dfrac{\partial f}{\partial y}\,\mathbf j+\dfrac{\partial f}{\partial z}\,\mathbf k=yze^{xz}\,\mathbf i+e^{xz}\,\mathbf j+xye^{xz}\,\mathbf k

\dfrac{\partial f}{\partial x}=yze^{xz}
\implies f(x,y,z)=\dfrac{yz}ze^{xz}+g(y,z)=ye^{xz}+g(y,z)

\dfrac{\partial f}{\partial y}=e^{xz}=e^{xz}+\dfrac{\partial g}{\partial y}
\implies\dfrac{\partial g}{\partial y}=0\implies g(y,z)=h(z)

\dfrac{\partial f}{\partial z}=xye^{xz}=xye^{xz}+\dfrac{\mathrm dh}{\mathrm dz}
\implies\dfrac{\mathrm dh}{\mathrm dz}=0\implies h(z)=C

f(x,y,z)=ye^{xz}+C

\mathbf r(t)=(t^2+5)\,\mathbf i+(t^2-1)\,\mathbf j+(t^2-5)\,\mathbf k
\implies\mathbf r(0)=5\,\mathbf i-\mathbf j-5\,\mathbf k
\implies\mathbf r(5)=30\,\mathbf i+24\,\mathbf j+20\,\mathbf k

By the gradient theorem, we have for any path \mathcal C originating at the point (5, -1, -5) and terminating at the point (30, 24, 20),

\displaystyle\int_{\mathcal C}\mathbf F\cdot\mathrm d\mathbf r=f(\mathbf r(5))-f(\mathbf r(0))=f(30,24,20)-f(5,-1,-5)
\implies\displaystyle\int_{\mathcal C}\mathbf F\cdot\mathrm d\mathbf r=24e^{600}+e^{-25}
4 0
3 years ago
A car travels at an average speed of 80 km/h for 2.1 hours. <br> How far did the car travel in km?
irakobra [83]

Answer:

Speed of car = 80km/hr. Distance covered in 2 hours = 2 * 80 = 160 km.

Step-by-step explanation:

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7 0
2 years ago
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jolli1 [7]

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Step-by-step explanation:

5/8 / 3/4

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20/24 / 4/4 = 5/6

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