Staals half
1 gram left
0.3 grams left
half lives are normally written in years
it goes likt this
A=final amount
P=initila amount
t=time elapsed
h=time half life is (same units as time)
let's use days as the units of time
we are given
initial amount=1gram
final amount=0.3gram
time=4 days
so
solve for h
take the ln of both sides
times both sides by h
divide both sides by ln(0.3)
use calculator
h=2.30287
3 sig figs
h=2.303 days
Answer:
she did not get at least 2100 and definitely not 85% of the worth
Step-by-step explanation:
3000*0.85=2550
3000*0.7=2100
Answer:
Ok ill help
Step-by-step explanation:
Hey there!
To solve, let's first add 5 to both sides.
xy=k+5
Now we divide both sides by y.
x=
I hope this helps!
Answer:
c
Step-by-step explanation:
Let the number be x
3x - 5
Atleast 37 means minimum 37
3x - 5 >=37