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dedylja [7]
3 years ago
10

Jan found that 12 of the 50 people he surveyed like lemon in the their tea. How many of the 4,500 people in his town would you e

xpect to also like lemon in their tea?
Please help ASAP
Mathematics
1 answer:
tatuchka [14]3 years ago
3 0
50×90=4,500
12×90=1,080

1,080/4,500 is the answer
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If p(x) = 3+4x-4x^2 represents the profits in selling x thousand boombotix speakers, how many speakers should be sold to maximiz
Harman [31]

Hello from MrBillDoesMath!

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The idea is to represent p(x)  with a squared component...

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Add and subtract 1:

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To maximize profit we need to minimize the term (2x-1)^2  as it is always positive (or zero) and subtracts from the number 4.  The minimum of (2x -1)^2 occurs when 2x -1 = 0 or x = 1/2. Since x is the number of speakers in thousands, (1/2)x = 500 speakers.

Note: this problem can be more easily addressed in a Calculus course by taking the first derivative of p(x), setting it to zero, and solving for x (which yields x = 1/2 too)




Thank you,

MrB

4 0
3 years ago
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Vlada [557]
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. x</span>₁<span> </span><span> = 10 , x </span> ₂  = 2
4 0
4 years ago
Read 2 more answers
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