Answer:
The equation that describes the amount of mass left after a time t of a radioactive isotope is the following:
where
is the mass of the sample at t = 0
is the half-life of the sample
For the element X in this problem,
We want to find the time t at which
So we need to re-arrange the equation making t the subject:
Step-by-step explanation:
Answer:
x < 5
Step-by-step explanation:
What 5 > x means is that the variable x takes values less than 5, we can notice that because the narrow part of the symbol is pointing towards x, which means x is smaller than 5.
Analyzing the options:
- x> 5 this tells us that x takes values greater than 5, which in fact is the opposite of what we are looking for.
- 5 <x this also tells us that x takes values greater than 5, not what we are looking for.
- x < 5 this option does represent the same as 5 > x because in both the narrow part of the symbol points to x, indicating that x is smaller than 5, therefore this is the correct option
Answer:
0
Step-by-step explanation:
-y₁ + y₂\-x₁ + x₂ = m
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Answer:
30(2 - 5x)
Step-by-step explanation:
