P divided by 8.2 = 9.3 who is smart
2 answers:
Answer:
Step-by-step explanition
- In algebra the divide sign is not usually used, so we put a fraction line instead.
- After that, we take 8.2 to the right hand side in order to find the value of "P". Since it was divided on the left-hand side, we turn the sign into a multiply, as we moved it on the other side of the equal sign.
- The last step is to solve it, multiply the 2 numbers and you hve your answer.
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Answer:
60 times will they ring together at the same second in one hour excluding the one at the end.
Step-by-step explanation:
Given : Five bells begin to ring together and they ring at intervals of 3, 6, 10, 12 and 15 seconds, respectively.
To find : How many times will they ring together at the same second in one hour excluding the one at the end?
Solution :
First we find the LCM of 3, 6, 10, 12 and 15.
2 | 3 6 10 12 15
2 | 3 3 5 6 15
3 | 3 3 5 3 15
5 | 1 1 5 1 5
| 1 1 1 1 1
So, the bells will ring together after every 60 seconds i.e. 1 minutes.
i.e. in 1 minute they rand together 1 time.
We know, 1 hour = 60 minutes
So, in 60 minute they rang together 60 times.
Therefore, 60 times will they ring together at the same second in one hour excluding the one at the end.
To find the answer, use
, and then use the equation
To find it's half life.