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Jlenok [28]
3 years ago
13

An account earned $143.86 in simple interest over 4 years and 3 months. There were no deposits or withdraws on the account. The

interest rate is 0.25%. What is the principle for the account?
Mathematics
1 answer:
Citrus2011 [14]3 years ago
3 0
X(0.25)=143.86
x=143.86/0.25=575.44  (575.44 is the principal amount.
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​ A sample of n = 9 college students is used to evaluate the effectiveness of a new Study Skills Workshop. Each student’s grade
forsale [732]

Answer:

B) μD = 0.60 ± 0.10(1.397)

Step-by-step explanation:

The confidence interval is given by:

MD±t_{\alpha/2, n-1} \frac{s}{\sqrt{n} }

Where

MD=60

n=9

df=n-1=8

t_{\alpha/2, n-1}=1.397

s=\sqrt{0.09} =0.3

Then the confidence interval is

μD=0.60±1.397*(0.3/√9)

μD=0.60±0.10*(1.397)

6 0
3 years ago
Zhi needs new flooring for her two laundry rooms.each room is 4.5 feet long and 4.5 feet wide . How much are will the flooring n
klio [65]

Answer: 40.5 square feet

Step-by-step explanation:

Given : Zhi needs new flooring for her two laundry rooms.each room is 4.5 feet long and 4.5 feet wide .

We assume that the room is rectangular in shape .

Area of rectangle = Length x width

Then area of one laundry room = 4.5  feet x 4.5 feet = 20.25 square feet

Area of two laundry room = 2 x 20.25 = 40.5 square feet.

Hence, The flooring need to cover a total of <u>40.5 square feet</u> of area.

7 0
3 years ago
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Find the maximum rate of change of f(x,y,z=x y/z at the point (2, -3, 5 and the direction in which it occurs. maximum rate of ch
kherson [118]
f(x,y,z)=x+\dfrac yz
\implies \nabla f(x,y,z)=\left(1,\dfrac1z,-\dfrac y{z^2}\right)
\implies \nabla f(2,-3,5)=\left(1,\dfrac15,\dfrac3{25}\right)

The maximum rate of change is then

\|\nabla f(2,-3,5)\|=\dfrac{\sqrt{659}}{25}

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6 0
3 years ago
What fractions are equivalent to 1/3?
ExtremeBDS [4]

Answer:

#markasbrainliest

1/3

=

2/6

=

3/9

=

4/12

=

5/15

=

6/18

=

7/21

=

8/24

=

9/27

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10/30

=

11/33

=

12/36

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13/39

=

14/42

=

15/45

=

16/48

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17/51

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18/54

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19/57

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20/60

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21/63

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22/66

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23/69

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24/72

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25/75

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26/78

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27/81

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28/84

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29/87

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30/90

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31/93

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32/96

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33/99

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34/102

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35/105

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36/108

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37/111

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38/114

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39/117

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40/120

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41/123

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42/126

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43/129

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44/132

=

45/135

=

46/138

=

47/141

=

48/144

=

49/147

=

50/150

=

51/153

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52/156

=

53/159

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54/162

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55/165

=

56/168

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57/171

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58/174

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59/177

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60/180

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61/183

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62/186

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63/189

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64/192

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65/195

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66/198

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67/201

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68/204

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69/207

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70/210

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71/213

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72/216

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73/219

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74/222

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75/225

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76/228

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77/231

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78/234

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79/237

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80/240

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81/243

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82/246

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83/249

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84/252

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86/258

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87/261

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88/264

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89/267

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90/270

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91/273

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92/276

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93/279

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94/282

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96/288

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97/291

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98/294

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99/297

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100/300

3 0
3 years ago
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The five new teachers at a school were surveyed. Is this sample of teachers at the school likely to be biased?
nordsb [41]

Answer:

yes because since they are new they are all going to have a different opinion on the school than other teachers thats been there for years

hope this helps

have a good day :)

Step-by-step explanation:

8 0
3 years ago
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