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A computer can sort x objects in t seconds, as modeled by the function below: t=0.005x^2+0.002x How many objects are required to keep the computer busy for exactly 9 seconds? Ro…
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A computer can sort x objects in t seconds, as modeled by the function below: t=0.005x^2+0.002x How many objects are required to keep the computer busy for exactly 9 seconds? Ro…
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Jan 22, 2017
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A computer can sort x objects in t seconds, as modeled by the function below:
t=0.005x^2+0.002x
How many objects are required to keep the computer busy for exactly 9 seconds?
Round to the nearest whole object.
Computers & Tech
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t = 9 = 0.005x^2 + 0.002x
0.005x^2 + 0.002x - 9 = 0
To solve this quadratic equation divide by 0.005
x^2 + 0.4x - 1800 = 0
x = {-b +/- √[b^2 -4ac] } / 2a = {-0.4 +/-√[0.16 + 7200]} / 2 = { - 0.4 +/- 84.85}/2 =
Use only the positive result: x = 42.2 = 42
Answer: 42
Onyilimba
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