Answer:
the question is incomplete, so I looked for a similar one:
<em>After the release of radioactive material into the atmosphere from a nuclear power plant, the hay was contaminated by iodine 131 ( half-life, 8 days). If it is all right to feed the hay to cows when 10% of the iodine 131 remains, how long did the farmers need to wait to use this hay? </em>
iodine's half life (we are given x, we need to find b):
0.5A₀ = A₀eᵇˣ
x = 8 days
we eliminate A₀ from both sides
0.5 = eᵇ⁸
ln 0.5 = ln eᵇ⁸
-0.69315 = b8
b = -0.69315 / 8 = -0.08664
since the farmers need to wait until only 10% of the iodine remains (we already calculated b, now we need to find x):
0.1A₀ = A₀eᵇˣ
0.1 = eᵇˣ
ln 0.1 = bx
where b = -0.08664
x = ln 0.1 / -0.08664 = -2.302585 / -0.08664 = 26.58 days
Answer:
1000000
Step-by-step explanation:
1 cubic meter is equal to 33814.022558919 ounce, or 1000000 milliliter.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between ounces and milliliters.
Type in your own numbers in the form to convert the units
Answer:
(1,-1)
Step-by-step explanation:
X goes up +1 and Y goes down -1
CDAB
4.2 (convert to frac on ur own)
12.5=x
CB= 14.5
AB= 8.82
