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attashe74 [19]
3 years ago
5

200 tickets for a concert are sold for a totalof £720 tickets cost £5 for adults and £3 for children how many tickets of each ty

pe are sold?
Mathematics
1 answer:
borishaifa [10]3 years ago
4 0

Answer:

  • 60 adult tickets
  • 140 children's tickets

Step-by-step explanation:

Let "a" represent the number of adult tickets sold. Then the total revenue is ...

  5a +3(200-a) = 720

  2a +600 = 720 . . . . . . simplify

  2a = 120 . . . . . . . . . . . . subtract 600

  a = 60 . . . . . . . . number of adult tickets sold

  200-a = 140 . . . number of tickets for children sold

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Step-by-step explanation:

total chips = 6

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3 years ago
) Set up a double integral for calculating the flux of F=3xi+yj+zk through the part of the surface z=−5x−2y+2 above the triangle
Fynjy0 [20]

The surface (call it S) is a triangle with vertices at the points

x=0,y=0\implies z=2\implies(0,0,2)

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x=2,y=0\implies z=-8\implies(2,0,-8)

Parameterize S by

\vec s(u,v)=(1-v)(2,0,-8)+v\bigg((1-u)(0,2,-2)+u(0,0,2)\bigg)=(2-2v,2v-2uv,-8+6v+4uv)

with 0\le u\le1 and 0\le v\le1. Take the normal vector to S to be

\vec s_v\times\vec s_u=(20v,8v,4v)

Then the flux of \vec F across S is

\displaystyle\iint_S\vec F(x,y,z)\cdot\mathrm d\vec S=\int_0^1\int_0^1\vec F(x(u,v),y(u,v),z(u,v))\cdot(\vec s_v\times\vec s_u)\,\mathrm du\,\mathrm dv

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Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
How do you do 1/4 (16x+20)-7x
Ira Lisetskai [31]
Distribute the 1/4:
1/4(16x) + 1/4(20) - 7x

Do the multiplication:
1/4(16x) = 16x/4 = 4x
1/4 (20) = 20/4 = 5

Now you have:
4x + 5 - 7x = 0

Combine like terms (4x and -7x):
-3x + 5 = 0

Subtract 5 from both sides:
-3x = -5

Divide by -3:
x = -5/-3 = 5/3

Answer:
x= 5/3
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3 years ago
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