A scientist finds the temperature of a sample at the beginning of an experiment is t degrees celcius. After 1 hour, the temperat
ure 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?
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
12 1/4- 1 1/2 >>> Convert fractions to decimals: 12.25- 1.5 = 10.75 >>> Convert decimals back to fractions: 10 3/4 >>> Add miles from the morning: 10 + 10 3/4 = 20 3/4 miles
So from the problem we get that the two sides of the rctangle are 16 cm 12 cm which are base perpendicular of the right angle triangle. H = 20 cm. So the diagonal of the rectangle = 20 cm.
