miacrawford2006
miacrawford2006 miacrawford2006
  • 21-04-2020
  • Biology
contestada

Help me pls ASAP !!

If it takes 700 million years for half of your the uranium in a rock to decay into lead how old is a fossil that is:

a.) 50% uranium and 50% lead

b.) 25% uranium and 75% lead

Relax

Respuesta :

CheezyCat
CheezyCat CheezyCat
  • 22-04-2020

Answer:

The answer is a).I think so...Tell me if I'm wrong

Answer Link

Otras preguntas

WHICH ONE IS THE CORRECT ANSWER?​
To help food advertisers produce more effective advertising, the Food Marketing Institute did a study that asked respondents which of four reasons best explaine
No one answered the palm tree question so I will put this question up for 15 points. Please answer now it’s due!
PLEASE HELP!!!! What is the measure of The gravitational force on an object?
if u want a friend just comment. ​
i need to know how answer these questions????????????????????????????????
When x = 2, 10+ 3(12= (3x)) = ? A. 12 B. 16 C. 26 D.34 E. 104
Sue's paycheck is $1,040 for 40 hours of work. If she works 30 hours next week, what will her paycheck be?
Which angle is not necessarily congruent to 1?
Which of the following is a central idea in the conclusion of the Declaration of Independence?