S22400589 S22400589

04-05-2020
Mathematics

contestada

If 40% of a radioactive substance remains after 20 years, what is the half-life of the substance?

Respuesta :

abrienbowman7 abrienbowman7

04-05-2020

Answer:

192 Hr

Step-by-step explanation:

Answer Link

cuentaprivada046 cuentaprivada046

04-05-2020

Answer:

it would be 176hrs of half life

Answer Link

Otras preguntas

The difference between the number x and 13 is at least 15

Please help! Thanks :)

How do I solve this problem?

What is a number with one or more digits to the right of the decimal point called? P.S I’m only fifth grade..... thx for the help :)

Crashes caused by speeding vehicles killed __________ people in 2009. A. 1,119 B. 3,166 C. 7,538 D. 10,591

Can someone please help me? I would appreciate it if you showed all your work and write legibly please..also the questions I did, can you please clarify with me

________ breaks down a problem into a series of high-level tasks and continues to break each task into successively more detailed subtasks. question 13 options:

what is the missing constant term in the perfect square that starts with x^2-8x

Each entry in a(n) _______ database has one parent node, with the parent node having several child nodes.

Hunter is trying to write a proper scientific question. He is thinking of these three options: A. What is gravity? B.how does the force of gravity affect object