FInd the common denominator of 3 and 4, which is 12, then multiply.
The amount of strontium that will remain after 40 hours is 5 g
<h3>How to determine the number of half-lives </h3>
- Half-life (t½) = 10 hours
- Time (t) = 40 hours
- Number of half-lives (n) =?
n = t / t½
n = 40 / 10
n = 4
<h3>How to determine the amount remaining </h3>
- Original amount (N₀) = 80 g
- Number of half-lives (n) = 4
N = N₀ / 2ⁿ
N = 80 / 2⁴
N = 80 / 16
N = 5 g
Learn more about half life:
brainly.com/question/26374513
Probability simplified is almost like asking how much are you likely to do something,in this case; select a certain color of marbles.
The Probability of choosing a red marble is 4 expressed as a numerator to the total number of marbles.(4/12---> 1/3)
Green- (3/12---> 1/4)
Yellow- (5/12)
For this question you don't even have to calculate the probability. You're most likely to select the yellow ones because they're the majority.
Hope this helped:)
Answer:
c- people might not realize there words/actions are hurtful
Cos(t/2) I got .45 is that what you were looking for or do I need to plug it into the equation up top? can you give me notes of something? cos( -9/11/2) = .45