About 92 days are taken for 90 % of the material to <em>decay</em>.
The mass of radioisotopes (
), measured in milligrams, decreases exponentially in time (
), measured in days. The model that represents such decrease is described below:
(1)
Where:
- Initial mass, in milligrams.
- Current mass, in milligrams.
- Time constant, in days.
In addition, the time constant is defined in terms of half-life (
), in days:
(2)
If we know that 
, 
and 
, then the time required for decaying is:
About 92 days are taken for 90 % of the material to <em>decay</em>.
We kindly invite to check this question on half-life: brainly.com/question/24710827
Answer:
y=-3x-2
Step-by-step explanation:
so the line is going down so we know that the slope is going to be negative.
slope is y over x and it looks like every time it goes up 3 and to the right 1 so 3/1 is 3 so the slope is 3 and if the slope has to be negative than the answer is the first one
True.
The diameter is the axis of symmetry of a circle.
The diameter divides the circle into two equal parts. Therefore, it can be considered an axis of symmetry. Everything on the right of the diameter is the same as everything on the left of the diameter.
answer
True.
Answer:
y= 2
x
+
2 i think
Step-by-step explanation:
Answer:
<u>The answer is 5 set of curtains and it remains 6 yards of fabric.</u>
Step-by-step explanation:
Let's calculate the number of sets of curtains that Ruby can make with the 46 yards of fabric.
Number of sets of curtains = 46/8
Number of sets of curtains = 5 and it remains 6 yards
<u>The answer is 5 set of curtains and it remains 6 yards of fabric.</u>
