Answer:
Step-by-step explanation:
Given that
|5x+2|=8
Note that
|x|=x for ×>0
|x|=-x for ×<0.
So, for the first case
|5x+2|=8
5x+2=8
5x=8-2
5x=6
x=6/5
Also, the second aspect.
|5x+2|=8
-(5x+2)=8
Divide both side by -
5x+2=-8
5x=-8-2
5x=-10
x=-10/2
x=-5
Answer:
Option C is correct
Step-by-step explanation:


<h3>Hope it is helpful...</h3>
Answer:
good
Step-by-step explanation:
Answer:
- <u>59.0891 g (rounded to 4 decimal places)</u>
Explanation:
<em>Half-life time</em> of a radioactive substance is the time for half of the substance to decay.
Thus, the amount of the radioactive substance that remains after a number n of half-lives is given by:
Where:
- A is the amount that remains of the substance after n half-lives have elapses, and
- A₀ is the starting amount of the substance.
In this problem, you have that the half-live for your sample (polonium-210) is 138 days and the number of days elapsed is 330 days. Thus, the number of half-lives elapsed is:
- 330 days / 138 days = 2.3913
Therefore, the amount of polonium-210 that will be left in 330 days is: