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Fittoniya [83]
3 years ago
10

1. David trabajó hoy 7 1/3 horas y plantó 11 árboles. Le toma aproximadamente la misma cantidad de tiempo plantar cada árbol. ¿C

uánto tiempo le llevó plantar cada árbol? Redondea a la décima más cercana.​
Mathematics
1 answer:
eimsori [14]3 years ago
7 0
Sjsjsjsjsjdjdjsjs also Ian’s lol banksia
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A police cruiser approaching a right-angled intersection from the south, is chasing a speeding car that has turned the corner an
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Melissa wants to check the accuracy the accuracy of the finance charge on her promissory note. She has a $6000, four-year loan a
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Answer:

1. Melissa wants to check the accuracy of the finance charge on her promissory note. She has a $6,000, 4-year loan at an APR of 3.11%.

What is her monthly payment?

$133.10

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State the Rules for Reflection across the x-axis and across the y-axis
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The rule for reflecting over the X axis is to negate the value of the y-coordinate of each point, but leave the x-value the same. For example, when point P with coordinates (5,4) is reflecting across the X axis and mapped onto point P', the coordinates of P' are (5,-4).

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-3y = 2x - 9; x= -3, 0, 3
astraxan [27]
1.)-3y=2* -3-9
    -3y=-6-9
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        y=5
    -3*5=-15
2.)-3y=2*0-9
    -3y=0-9
    -3y=-9
       y=3
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3.)-3y=2*3-9
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3 0
3 years ago
A study was conducted to determine whether magnets were effective in treating pain. The values represent measurements of pain us
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Answer and Step-by-step explanation: The null and alternative hypothesis for this test are:

H_{0}: s_{1}^{2} = s_{2}^{2}

H_{a}: s_{1}^{2} > s_{2}^{2}

To test it, use F-test statistics and compare variances of each treatment.

Calculate F-value:

F=\frac{s^{2}_{1}}{s^{2}_{2}}

F=\frac{1.26^{2}}{0.93^{2}}

F=\frac{1.5876}{0.8649}

F = 1.8356

The <u>critical value of F</u> is given by a F-distribution table with:

degree of freedom (row): 20 - 1 = 19

degree of freedom (column): 20 - 1 = 19

And a significance level: α = 0.05

F_{critical} = 2.2341

Comparing both values of F:

1.856 < 2.2341

i.e. F-value calculated is less than F-value of the table.

Therefore, failed to reject H_{0}, meaning there is <u>no sufficient data to support the claim</u> that sham treatment have pain reductions which vary more than for those using magnets treatment.

4 0
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