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Nataliya [291]
3 years ago
10

Please help. 20 points and brainliest.

Mathematics
1 answer:
julia-pushkina [17]3 years ago
7 0

Answer:

minimum -45, maximum 32

Step-by-step explanation:

C=4x-3y

x≥0, y≥4, x+y≤15

Maximum value of C can be achieved at max x and min y

  • min y=4 => max x=15-4=11
  • C=4*11-3*4= 32

Minimum value of C can be achieved at min x and max y

  • min x=0, max y =15
  • C=4*0-3*15= -45

So answer is minimum -45, maximum 32

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Answer:

60%

Step-by-step explanation:

You can solve this problem by setting up a system of equations.

Let's say that the number of tickets bought by students in the first year is x, and the number bought by continuing students is y. From there, you can set it up like this:

0.4x+0.2y=160

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Now, you can multiply the first equation by 5 on both sides to get:

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Subtracting the second equation from the first equation now yields:

x=300

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Since 300 of the 500 tickets bought were from the first year students, and 300/500 is 0.6, 60% of the students who bought the ticket were first year students. Hope this helps!

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3 years ago
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3 years ago
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Now move the center of rotation, R, to a different position on the coordinate plane.
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