Answer:
a) 
(
), b) 
(
), c) 
, d) 
, e) 
(
), f) 
(
), g) 
(
)
Step-by-step explanation:
All radioactive isotopes decay exponentially, the mass of the isotope as a function of time (
), measured in grams, is defined by:
(1)
Where:
- Initial mass of the isotope, measured in grams.
- Decay rate, measured in 
or 
or 
.
- Time, measured in minutes, days or years.
We define the decay rate in terms of half-life by using the following expression:
(2)
Where 
is the half-life of the isotope, measured in minutes or years.
Now we proceed to determine the missing values:
a) Polonium-200 (
)
b) Lead-194 (
)
c) Iodine-125 (
)
d) Kryption-75 (
)
e) Strontium-79 (
)
f) Uranium-229 (
)
g) Plutonium-239 (
)
It's the second one
An input can only have one output, an output can have multiple inputs though
Answer:
The volume would be 86.63 feet squared
Hope this helps!
Mark me brainliest if I'm right :)
_
| x+y(less than or equal to)17
| 11x+8y(greater than or equal to)160
~
Answer:
S(t) = 2 - 0.25*t
Step-by-step explanation:
A lake near the Arctic Circle is covered by a 2-meter-thick sheet of ice during the cold winter months.
When spring arrives, the warm air gradually melts the ice, causing its thickness to decrease at a constant rate.
S(t) denote the ice sheet's thickness S ( measured in meters) as a function of time (measured in weeks).
Therefore the equation formed will be linear.
The equation will be of the form y = mx + b
Here S(t) = mt + b
Here m is the slope which is the rate at which ice is melting.
Putting t = 0
S(t) = 2
Putting t = 3,
S(t) = 1.25
Therefore, m*0 + b = 2 or, b = 2
and 3m + b = 1.25
or, 3m = 1.25 - 2 = -0.75
or, t = -0.25
Hence, function's formula = S(t) = -0.25*t + 2
i.e. S(t) = 2 - 0.25*t
