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Xelga [282]
3 years ago
13

A car that originally cost $20,000 depreciates by 15% each year in about how many years will be car be worth half its value use

the equation 10,000=20,000(0.85)^x to solve the problem round your answer to the nearest dollar
Mathematics
1 answer:
DENIUS [597]3 years ago
6 0
0.5=0.85^x  taking the natural log of both sides...

ln0.5=x ln0.85

x=ln0.5/(ln0.85)

x≈4.265

Then:

f=20000(0.85)^(4.265)

f=$10000.00 to nearest dollar
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The values of k for the different quadratic equation solutions are as follows

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ci the equation -x² + 3x + (k + 1) = 0 has real roots

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Quadratic equations of the form ax² + bx + c = 0 is solved using the formula

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divide through by coefficient of k

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substituting the values gives  

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divide through by coefficient of k²

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Learn more about roots of quadratic equations: brainly.com/question/26926523

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