2 years ago

Assume that the value of an automobile is inversely proportional to its age. If It is worth $3,500 when it is three years

1 answer:

3 0

If the value for three years is $3500 then the answer should be $7000. you would take 3500 and multiply it by 2 because 3 years plus 3 years is 6 years

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Help please, you smart peoples ;-; Will give brainliest!

Norma-Jean [14]

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2 years ago

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If x-1/x=5 find x^3+1/x^3=?

ipn [44]

$\dfrac{x-1}{x}=5\ \ \ \ /x\neq0\\\\\dfrac{x-1}{x}=\dfrac{5}{1}\ \ \ \ |\text{cross multiply}\\\\5x=x-1\ \ \ \ |-x\\\\5x=1\ \ \ \ |:5\\\\x=0.2\\\\\dfrac{x^3+1}{x^3}=\dfrac{x^3}{x^3}+\dfrac{1}{x^3}=1+\dfrac{1}{x^3}\to1+\dfrac{1}{0.2^3}=1+\dfrac{1}{0.008}\\\\=1+\dfrac{1}{\frac{8}{1,000}}=1+\dfrac{1,000}{8}=1+125=126\\\\\text{Answer:}\ \dfrac{x^3+1}{x^3}=126$