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11111nata11111 [884]
4 years ago
9

The value of a computer is $1200. It loses 20% of its value every year. Write a function the represents the value y (in dollars)

of the computer after t years. The find the value of the computer after 5 years.
Mathematics
1 answer:
Lostsunrise [7]4 years ago
7 0

<em>y = 1200(.80)^t  Plug in 5 for t (time).</em>

<em>y = 1200(.80)^5 </em>

<em>.80^5= 0.33</em>

<em>0.33 x 1200 = 395</em>

<em>Therefore, the value of the computer after 5 years has deteriorated to $396.</em>

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Answer:

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Step-by-step explanation:

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The probability that one is defective and the other is not can be represented with: (D and G) or (G and D)

Which means that the defective is selected first, then the good one or the good one is selected first, then the defective one.

This is then calculated as:

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We used Total - 1 on second selections because it is a probability without replacement

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Probability = \frac{1}{5} * \frac{6}{7} + \frac{2}{5} * \frac{3}{7}

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A cylinder has diameter of 4ft and a height of 9ft. Explain whether halving the diameter has the same effect on the surface area
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Answer:

See Below

Step-by-step explanation:

The surface area of cylinder is given by the formula:

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Where

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Lets find original surface are:

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<u>Halving diameter:</u>

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<u>Halving height:</u>

Height is 9, halving would make it 9/2 = 4.5

Now, calculating new SA:

SA=2\pi r^2 + 2\pi r h\\SA=2\pi (2)^2 + 2\pi (2) (4.5)\\SA=8\pi + 18\pi\\SA= 26\pi

Original SA is 44\pi,

Halving diameter makes it 20\pi

Halving height makes it 26\pi

So, halving diameter does not have same effect as halving height.

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