Answer:
The expression that represents the number of days until only 10% remains is T((d) 10 %) =100×.
Step-by-step explanation:
The equation for half life is of the form
A = A₀×.........................................................................(1)
Where
A = Final amount
A₀ = Initial amount
t = Time
h = Half life
For the equation T(d) = 100×2⁽⁻²⁾....................................(2)
We have by comparison with the equation for half life
2 ≡ and and the equation (2) can be written as
Percentage remaining after 2 half lives is
×100=100×
However if the half life of Technetium-99m is 6 hours then we have for one day
×100=100×
Therefore an expression that represents the number of days until only 10% remains is
×100=100× = 10 %
=
= ㏑ = ㏑()
= ×㏑ = ㏑()
= = 3.322
Therefore the expression for the number of days 10 % of Technetium-99m will be remaining is
T((d) 10 %) =100×
Answer:
a. variable
Step-by-step explanation:
X = number of days a Lake Tahoe Community College math student is absent
X is a random variable.
A random variable is a variable whose value is a numerical outcome of a random phenomenon.
A random variable's possible values might represent the possible outcomes of a yet-to-be-performed experiment.
Random variables are often denoted with capital letter
s and they can be discrete or continuous.
L=3$-x×2 x=D hope this helps?
Answer:
-1
Step-by-step explanation:
Use the formula for slope: (y1-y2)/(x1-x2)
(2-4)/(3-1)=-2/2=-1
6/5, or 1 and 1/5. Since 6 goes into 18, 3 times, you must multiply 2/5 and 3/1.
<u>2</u> x <u>3</u> = <u>6</u>
5 x 1 = 5