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AveGali [126]
3 years ago
14

Brent runs a small toy store specializing in wooden toys. From 2000 through 2012, the number of toys Brent made can be modeled b

y N(x) = 0.7x2 — 2x + 23, and the average cost to make each toy can be modeled by C(x) = —0.004x2 — 0.08x + 25, where xis the number of years since 2000. Write a polynomial that can be used to model Bren?s total cost for making the toys, T(x), for those years.
Mathematics
1 answer:
maks197457 [2]3 years ago
5 0

Answer:

which of the following element is essential to formation and

Step-by-step explanation:

maintenance of bones and teeth

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before getting to school john has a few errands to run john has to walk 5 blocks to the galley and 9 blocks to the library befor
Serggg [28]

Answer:

  9 blocks

Step-by-step explanation:

The total of what John has already walked and the number more he must walk will be equal to the number he has to walk to get to school.

  12 + more = 5 + 9 + 7

  more = 9 + 5 + 7 - 12 . . . . . subtract 12 from both sides

  more = 9

John must walk 9 blocks more.

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We recognize that 5+7 = 12, so that last part of the sum totals zero.

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It needs to be b or lest than that
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Help, I don’t understand
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2 years ago
Each year, all final year students take a mathematics exam. It is hypothesized that the population mean score for this test is 8
drek231 [11]

Answer:

95% Confidence interval:  (96.06,103.94)

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 85

Sample mean, \bar{x} = 100

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 11

95% Confidence interval:

\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

100 \pm 1.96(\frac{11}{\sqrt{30}} ) = 100 \pm 3.94= (96.06,103.94)

(96.06,103.94) is the 95% confidence interval for  the population mean test score.

8 0
3 years ago
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