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Finger [1]
3 years ago
12

How many songs are on one's playlist? please help asap I think 100

Mathematics
2 answers:
earnstyle [38]3 years ago
8 0

Answer:

on mine i have around 100 but the average is 20-25 as an overall one

Rudik [331]3 years ago
3 0

Answer:

What do you mean by one? If you mean mine, I've got like 20.

Step-by-step explanation:

If that's not your question, then please elaborate.

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A storage box with a square base must have a volume of 90 cubic centimeters. the top and bottom cost $0.60 per square centimeter
Paul [167]

<u>Answer-</u>

<em>For </em><em>side length of 3.56 cm</em><em> and </em><em>height of 7.10 cm</em><em> the cost will be minimum.</em>

<u>Solution-</u>

Let us assume that,

x represents the length of the sides of the square base,

y represent the height.

Given the volume of the box is 90 cm³, so

\Rightarrow V=90\\\\\Rightarrow x^2\times y=90\\\\\Rightarrow y=\dfrac{90}{x^2}

As the top and bottom cost $0.60 per cm² and the sides cost $0.30 per cm². Total cost C will be,

C=\text{cost for top and bottom}+\text{cost for rest 4 sides}\\\\=(2x^2\times 0.6)+(4xy\times 0.3)\\\\=(2x^2\times 0.6)+(4x\times \frac{90}{x^2}\times 0.3)\\\\=1.2x^2+ \dfrac{108}{x}

Then,

C'=\dfrac{d}{dx}(1.2x^2+ \dfrac{108}{x})=2.4x-\dfrac{108}\\\\C''=\dfrac{d^2}{dx^2}(1.2x^2+ \dfrac{108}{x})=2.4+\dfrac{216}{x^3}

As C'' has all positive terms  so, for every positive value of x (as length can't be negative), C'' is positive.

So, for minima C' = 0

\Rightarrow 2.4x-\dfrac{108}{x^2}=0\\\\\Rightarrow 2.4x=\dfrac{108}{x^2}\\\\\Rightarrow x^3=\dfrac{108}{2.4}=45\\\\\Rightarrow x=3.56

Then,

y=\dfrac{90}{x^2}

y=\dfrac{90}{3.56^2}

y=7.10

Therefore, for side length of 3.56 cm and height of 7.10 cm the cost will be minimum.

4 0
4 years ago
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A single die is rolled. what is P(3)
Triss [41]

Answer:

what? I am so confused. How you worded it is confusing

Step-by-step explanation:

6 0
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Chuck wants to draw three-dimensional figure whose lateral faces are rectangles he says he can draw prisms and pyramids
user100 [1]
you can also draw a 3-dimensional cube

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3 years ago
I am a 2 dimensional shape that had 5 obtuse angles
Montano1993 [528]

Answer:

A pentagon.

Step-by-step explanation:

A pentagon is a 5-sided polygon. Its interior angles each are equivalent to 108°.

108° ≥ 90°,  so the angles are obtuse.

Therefore, a 2-D shape with 5 obtuse angles is a <u>pentagon</u>.

5 0
3 years ago
Which of the following is a perfect square trinomial ?
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Answer:

The answer is A

Step-by-step explanation:

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