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SOVA2 [1]
3 years ago
14

A BMW that cost $71,000 in 2003 depreciates in value about 15% a year. How much was it worth in 2013?

Mathematics
1 answer:
N76 [4]3 years ago
6 0
100-15= 85% 

2013-2003= 10 years

$71,000 * (0.85^10yrs)= $13,978<span>.</span>08

Did this make sense or would you like me to explain some more about something you are still not understanding? Please comment below :)
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Hey there!

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3 years ago
What is -4/5x-2=18 what is x help quick
mart [117]

Answer:

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Step-by-step explanation:

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Use a proof by contradiction to show that the square root of 3 is national You may use the following fact: For any integer kirke
Ierofanga [76]

Answer:

1. Let us proof that √3 is an irrational number, using <em>reductio ad absurdum</em>. Assume that \sqrt{3}=\frac{m}{n} where  m and n are non negative integers, and the fraction \frac{m}{n} is irreducible, i.e., the numbers m and n have no common factors.

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3=\frac{m^2}{n^2} (1)

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Substituting m=3p into (1), we get

3= \frac{9p^2}{n^2}

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Thus, 3 divides n^2 and necessarily 3 must divide n. Hence, n=3q where q is a non negative integer.

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The above equality means that the fraction \frac{m}{n} is reducible, what contradicts our initial assumption. So, \sqrt{3} is irrational.

2. Let us prove now that the multiplication of an integer and a rational number is a rational number. So, r\in\mathbb{Q}, which is equivalent to say that r=\frac{m}{n} where  m and n are non negative integers. Also, assume that k\in\mathbb{Z}. So, we want to prove that k\cdot r\in\mathbb{Z}. Recall that an integer k can be written as

k=\frac{k}{1}.

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k\cdot r = \frac{k}{1}\frac{m}{n} = \frac{mk}{n}.

Notice that the product mk is an integer. Thus, the fraction \frac{mk}{n} is a rational number. Therefore, k\cdot r\in\mathbb{Q}.

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x=q-p.

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7 0
3 years ago
What is the answer to this question
rodikova [14]
The answer is 2
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2 years ago
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Answer:

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