R=S*0.5^(t/8)
<span>R is the remaining amount </span>
<span>S is the starting amount (500) </span>
<span>0.5^ is for the HALF in half-life </span>
<span>t/8 show that every 8 ts (every 8 hours), it will be halved once </span>
<span>...so plug in 500mg for the general solution... </span>
<span>R=(500)*(0.5)^(t/8) </span>
<span>... plug in 24h to solve for after 24h </span>
<span>R=(500)*(0.5)^(24/8) </span>
<span>R=(500)*(0.5)^(3) </span>
<span>R=(500)*(0.125) </span>
<span>R=(0.0625) </span>
<span>...therefore there with be 0.0625 mg of the dose remaining</span>
Divide the exponent inside the "√" by the exponent outside:
12/4=3, 16/4=4
so the answer is x³y^4
B is the answer.
Number of combinations =( 4 x 3 x 2) / (1 x 2 x 3) = 4
Answer: 4 Combinations
1 and 1/4
To get this final answer, follow these steps:
3 1/8 - 1 7/8
Change these into improper fractions:
25/8 - 15/8
Then subtract the numerators:
10/8
And finally, make it a mixed number and then simplify.
1 and 2/8 -> 1 1/4
Hope this helps!
