A scientist finds the temperature of a sample at the beginning of an experiment is t degrees celcius. After 1 hour, the temperature is t^2 degrees celcius. If the temperature after 1 hour is 81 degrees celcius, what are two possible original temperatures? What is the difference between the possible original temperatures?

Question

Mathematics

Derek Barron

7 February, 16:36

A scientist finds the temperature of a sample at the beginning of an experiment is t degrees celcius. After 1 hour, the temperature is t^2 degrees celcius. If the temperature after 1 hour is 81 degrees celcius, what are two possible original temperatures? What is the difference between the possible original temperatures?

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Answers (2)

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Tiffany Morse · Answer 1

The possible temperatures are 9 degrees or - 9 degrees as t^2 means t squared so the square root of 81 is t, however - 9 x - 9 and 9x9 is 81 so they're both possible answers.

as for the second part I'm not sure what they specifically want. sorry

Carlos · Answer 2

So the two possible original temperatures would be either - 9 or 9.