subject
Mathematics, 24.03.2020 05:39 lizbethmillanvazquez

It is known that the mass, m(t), of a radio-active substance decreases as it decays, and that the equation governing this is m′(t)=−0.015m(t) where t is in years. What is the half-life? (Hint: Find an exponential function which solves the equation. You will then have a formula for the mass, so you can find the half-life.)

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 17:00
Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?
Answers: 1
question
Mathematics, 21.06.2019 18:00
The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?
Answers: 1
question
Mathematics, 21.06.2019 20:30
Which expression is equivalent to (4 +6i)^2? ? -20 + 48i 8 + 12i 16 - 36i 20 + 48i
Answers: 1
question
Mathematics, 21.06.2019 21:00
Is there an x intercept in the equation 60*1.15^x
Answers: 3
You know the right answer?
It is known that the mass, m(t), of a radio-active substance decreases as it decays, and that the eq...
Questions
question
History, 06.12.2020 22:20
question
Mathematics, 06.12.2020 22:20
question
Mathematics, 06.12.2020 22:20
question
Mathematics, 06.12.2020 22:20