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AnnyKZ [126]
3 years ago
13

F(x)=0 if f(x)=-8x^2+6x+5

Mathematics
1 answer:
gogolik [260]3 years ago
5 0
Use the quadratic formula
x=(-b(+-) sqrt(b^2-4*a*c))/2a
(-6(+-)sqrt 36-4*-8*5)/-16
x=20/16-(5/4)
x=8/16-(1/2)
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Help please, explain each step or no points.
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357 of the next 500 songs downloaded are expected to be pop songs.
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Find the slope of the line.
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3 years ago
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4) Dan Ariely and colleagues have conducted some extremely interesting studies on cheating (see, for example Mazar, Amir, &
lianna [129]

I've attached the complete question.

Answer:

Only participant 1 is not cheating while the rest are cheating.

Because only participant 1 has a z-score that falls within the 95% confidence interval.

Step-by-step explanation:

We are given;

Mean; μ = 3.3

Standard deviation; s = 1

Participant 1: X = 4

Participant 2: X = 6

Participant 3: X = 7

Participant 4: X = 0

Z - score for participant 1:

z = (x - μ)/s

z = (4 - 3.3)/1

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Z-score for participant 2;

z = (6 - 3.3)/1

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Z-score for participant 3;

z = (7 - 3.3)/1

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z = (0 - 3.3)/1

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Now from tables, the z-score value for confidence interval of 95% is between -1.96 and 1.96

Now, from all the participants z-score only participant 1 has a z-score that falls within the 95% confidence interval.

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Answer:

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Step-by-step explanation:

The property of all squares is

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"The diagonals bisect each other"

Therefore Option D) is correct

That is Option D) "The diagonals bisect each other" is correct

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Answer:

b, Helen should have added 17 to both sides of the equation

Step-by-step explanation:

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