Mathematics, 10.03.2020 00:20 lee1677
The element Unobtainium has a half-life of 3 years. Let M(t) be the mass of Unobtainium at time t starting with an initial amount of 14 kg. (a) Give a formula for M(t). (b) After how many years will the initial mass of Unobtainium shrink to 1 kg? Round your answer to one digit after the decimal point. 6. Starbucks serves coffee at 170° and the room temperature in Starbucks is 70° The coffee cools to 100° after 10 minutes. Let T(t) be the temperature of the coffee at time 1, measured in minutes, (a) Write down the differential equation for T(t) and determine a formula for T(t). (b) From the time when the temperature is 100° at t = 10, how many additional minutes will it take for the temperature of the coffee to reach 80°? Round your answer to che digit after the decimal point.
Answers: 2
Mathematics, 21.06.2019 17:00
Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .
Answers: 1
Mathematics, 21.06.2019 19:00
Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?
Answers: 3
Mathematics, 21.06.2019 21:10
Which question is not a good survey question? a.don't you agree that the financial crisis is essentially over? 63on average, how many hours do you sleep per day? c. what is your opinion of educational funding this year? d.are you happy with the availability of electronic products in your state?
Answers: 2
Mathematics, 21.06.2019 21:40
Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.
Answers: 3
The element Unobtainium has a half-life of 3 years. Let M(t) be the mass of Unobtainium at time t st...
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