5. The half-life of a certain radioactive material is 78 hours. An initial amount of the material has a mass of 790 kg. Write an exponential function that models the decay of this material. Find how much radioactive material remains after. 18 hours. Round your answer to the nearest thousandth.
My answer: y = 790(1/2)^1/78x; 673.233 kg
7. The table shows the location and magnitude of some notable earthquakes. How many times more energy was released by the earthquake in Mexico than by the earthquake in Afghanistan?
The Richter Scale measure for Afghanistan is 6.9 and the Richter Scale measure for Mexico is 7.6
A. about 42.36 times as much energy
B. about 0.70 times as much energy
C. about 5.01 times as much energy**
D. about 21 times as much energy
These are questions from the Logarithmic Functions as Inverses Lesson 3 Unit 7 so if anyone knows the answers, that'd be helpful.
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well tbh im only in 6th grade so i cant help you here but on number 7 it says about and irdk but 5.01 isnt exactly round in my opinion
My other answer now that i look at it again would be 0.70. I just subtracted the two
1v1 me on Fort Epic name:Extendedbell369
Just took the quiz.
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When when life gives you lemons is correct! He saved not only my Math grade, but my job and marriage. Thank you!
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