Answer: 3 I think, I’m not positive though
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
All numbers in scientific notation or standard form are written in the form m × 10n, where m is a number between 1 and 10 ( 1 ≤ |m| < 10 ) and the exponent n is a positive or negative integer.
Therefore, the decimal number 0.00067 written in scientific notation is 6.7 × 10-4.
5 days/8 days = 0.625 half lives
<span>fraction left after 0.625 half lives = (1/2)^0.625 </span>
<span>= 0.6484197773 </span>
<span>Amount left = 20*0.6484197773 gms </span>
<span>= 12.97 gms to dp <<<</span>