mattskinner
mattskinner
12-04-2018
Mathematics
contestada
What the answer plz help
Respuesta :
Аноним
Аноним
12-04-2018
initial mass No = 30g, mass at half life (N) = 1/2 *30 = 15, so we have
15 = 30 e^-0.1253t
e^-0.1253t = 0.5
-0.1253t = ln 0.5
t = ln 0.5 / -0.1253
t = 5.5 days to nearest tenth. Answer
Answer Link
VER TODAS LAS RESPUESTAS ( 51+ )
Otras preguntas
A man wants to deposit $5000 into a bank account. The bank gives him two options: Option 1: 4% interest compounded annually Option 2: 4% interest compounded mon
a power supply maintains a potential difference of 58.1 v across a 1750 ω resistor. what is the current in the resistor
8. (3 Points) Find the value of x, then find the measure of angle Y. X 73° (4x + 9) Z
The work done in moving an object through a displacement of d meters is given by W = Fd cos 0, where 0 is the angle between the displacement and the force F exe
An octahedral die is a die with 8 sides number 1 through 8 all equally likely to turn face up. What is the expected value of a single roll of this die? 3. 50 4.
When an object is placed 10 cm in front of a certain mirror, a virtual image is formed 20 cm from the mirror What is the focal length of the mirror? -20 cm 0 +6
Solve 8sin(4x)=4 for the two smallest positive solutions A and B, with A A= _________-- B = ________
33/100 Lydia thinks of a decimal number. It is larger than but smaller than 46%. The number only has one decimal place. What number is she thinking of?
The ages of three boys Kofi, Yaw and Kwaku are in the ratio 2:3:5. If the difference between Kofi's age and kwaku's age is 15years, find the ages of the three b
A man wants to deposit $5000 into a bank account. The bank gives him two options: Option 1: 4% interest compounded annually Option 2: 4% interest compounded mon
