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madam [21]
2 years ago
5

The distribution of the number of items washed in a standard load of laundry is skewed left with a mean of 41 items

Mathematics
2 answers:
bogdanovich [222]2 years ago
7 0
C

Explain
Not sure if it’s correct but I had a similar question before
Likurg_2 [28]2 years ago
6 0

Answer:

C

Step-by-step explanation:

.9158

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Forces of 9 lbs and 13 lbs act at a 38º angle to each other. Find the magnitude of the resultant force and the angle that the re
fiasKO [112]

Answer: R=20.84\ lb\quad 22.57^{\circ},15.43^{\circ}

Step-by-step explanation:

Given

Two forces of 9 and 13 lbs acts 38^{\circ} angle to each other

The resultant of the two forces is given by

\Rightarrow R=\sqrt{a^2+b^2+2ab\cos \theta}

Insert the values

\Rightarrow R=\sqrt{9^2+13^2+2(9)(13)\cos 38^{\circ}}\\\Rightarrow R=\sqrt{81+169+184.394}\\\Rightarrow R=\sqrt{434.394}\\\Rightarrow R=20.84\ lb

Resultant makes an angle of

\Rightarrow \alpha=\tan^{-1}\left( \dfrac{b\sin \theta}{a+b\cos \theta}\right)\\\\\text{Considering 9 lb force along the x-axis}\\\\\Rightarrow \alpha =\tan^{-1}\left( \dfrac{13\sin 38^{\circ}}{9+13\cos 38^{\circ}}\right)\\\\\Rightarrow \alpha =\tan^{-1}(\dfrac{8}{19.244})\\\\\Rightarrow \alpha=22.57^{\circ}

So, the resultant makes an angle of 22.57^{\circ} with 9 lb force

Angle made with 13 lb force is 38^{\circ}-22.57^{\circ}=15.43^{\circ}

7 0
3 years ago
Read 2 more answers
in the early spring the trout at big blue Lake Swim at a deph of 30 feet below sea level when the lake warms up in the summer th
Ludmilka [50]

Answer:

-50 feet

Step-by-step explanation:

The trout is swimming 30 ft below sea level,if it were above sea level it would be positive but since its below it is negative. It then swims 20 feet lower so it would be -50 as a short cut you can use in problems like this one is to ignore the sign's and add it regularly then add the sign after the equation is done.

4 0
3 years ago
Jerry bought 9 gallons of gasoline for “D” dollars per gallon. Steve purchased the same amount of gasoline, but at a price that
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<h3><u>25</u> ( <u>13</u><u> </u> - <u>3</u><u>)</u></h3><h3> 6 ( 3 2)</h3>

<u>25</u><u> </u><u> </u>( <u>39 -9)</u>

6 (6)

<u>2</u><u>5</u><u> </u> × <u>30</u>

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<u>125</u>

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2 years ago
What is the perimeter of a square if it is (7 + 3x) units
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I hope this helps you



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