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Nataliya [291]
3 years ago
14

Find the domain of the function. Write your answer in interval notation. f(x)=-4x² + 5x +1

Mathematics
1 answer:
nirvana33 [79]3 years ago
6 0

Answer:

All real numbers

(-∞, ∞)

Step-by-step explanation:

Domain is the set of x-values that can be inputted into function f(x).

We see here that our function is a parabola. We also see that we can plug in any number <em>x </em>and we would get an output <em>y</em>. Therefore, our domain is all real numbers:

(-∞, ∞)

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Scrat [10]
H(t) = -16(t^2) + 64t

roots:

0 = -16t^2 + 64t
0 = t^2 - 4t
0 = t(t-4)
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The symmetry axis is at the middle of the two roots: t = (0+4)/2

That time (t=2)  is what it takes the object to reach the maximum height.

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Answer:

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Step-by-step explanation:

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4 years ago
Y-3x=-4<br> 2x+y=11<br> Solve each system of equations by using a table
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4 years ago
suppose the nightly rate for a three star hotel in paris is thought to be bell-shaped and symmetrical with a mean of 160 euros a
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Answer:

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Standard deviation (σ) = 8 euros

For any given rate, X, the z-score is:

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For X = 144 euros:

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z=\frac{176-160}{8}\\ z=2

In a standard distribution, a z-score of -2 corresponds to the 2.28th percentile, while a z-score of 2 corresponds to the 97.72th percentile.

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divide 32520 by 30

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