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Vladimir79 [104]
3 years ago
6

After being rearranged and simplified, which two of the following equations

Mathematics
2 answers:
Georgia [21]3 years ago
6 0

Answer:

B

Step-by-step explanation:

it is because is the cubic equation and the formula involves quadratic formula

musickatia [10]3 years ago
4 0

Answer:

c and d

Step-by-step explanation:

5x³ - 3x + 10 = 2x² has too high of a degree, so it can NOT be solved using the quadratic formula

2x² - 6x - 7 = 2x² will not have an x² once rearranged and simplified, so it can NOT be solved using the quadratic formula

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ivanzaharov [21]

Answer:

  • -2.2
  • 1.4%
  • -0.6
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<h3>Step-by-step explanation:</h3>

The z-value is computed from ...

... z = (x -µ)/σ

... z = (184 -206)/10 = -2.2 . . . . for $184

... z = (200 -206)/10 = -0.6 . . . . for $200

You can look up these values in a normal distribution table, or you can use an appropriate calculator to find the corresponding percentiles.

... -2.2 corresponds to the 1.390 percentile. (That amount of area is below -2.2 standard deviations from the mean.)

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Subtracting the two percentages gives the percentage of expenses between $184 and $200. That number is 26.035% ≈ 26%.

_____

<em>Comment on the calculator display</em>

The difference that got cut off from the display in the attachment is ...

... 0.2603496703

The <em>normalcdf( )</em> function requires a lower limit. Using -8 standard deviations is effectively equivalent to -∞ for this purpose, as any lower number has no effect on the least-significant digits of the result.

7 0
3 years ago
The distribution of the time it takes for different people to solve a certain crossword puzzle is strongly skewed to the right,
dezoksy [38]
<span>Answer: Skewed to right with mean 0 and S.D. 1 Explanation: Let's assume the z-scores as a linear transformation. then z=(x-mean)/S.D. = (x-30)/15 z(mean) = (30-30)/15= 0 z(sigma) = 15/15 = 1 Note: Shape does not change.</span>
5 0
3 years ago
Select the correct solution set. x + 17 ≤ -3
lions [1.4K]
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dexar [7]

Answer:

They're the same angle. I would look up transversals so you could understand it a bit more. I'll upload a picture of a transversal in my answer but you should search it anyways.

Anyways,

To solve, you set 160 equal to the other side.

160 = 3x + 10

150 = 3x

x = 50

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3 years ago
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