Answer:
Step-by-step explanation:
We would apply the formula,
y = ab^t
Where
a represents the initial amount of substance.
t represents the decay time.
From the information given
a = 100
t = 12 hours
Since after 12 hours, the amount of substance reduces by 0.1, then
y = 0.1 × 100 = 10
Therefore
10 = 100 × b^12
Dividing through by 100, it becomes
0.1 = b^12
Raising both sides of the equation by 1/12, it becomes
0.1^(1/12) = b^12/12
b = 0.8
The equation becomes
y = 100(0.8)^t
Where t = n, the expression becomes
y = 100(0.8)^n
Answer:
16
Step-by-step explanation:
Total beads = 42 + 28 + 12 + 18 = 100
Not yellow or green = 12 + 18 = 30
P(not yellow or green) = 30/100 x 100 = 30%
Total beads = 42 + 28 + 12 + 18 = 100
Red or green = 18 + 28 = 46
P(red or green) = 46/100 x 100 = 46%
Answer: <span>The probability of Kayla not drawing a yellow or a green bead is 30%.
</span><span> The probability of Kayla drawing a red or a green bead is 46%. </span>
46,500 if I am not wrong.
Hope this helps!
:D
