Answer:
2nd option is correct...................................
Answer:
The answer is 1716
Step-by-step explanation:
214.50x8=1716
7/10 + 4/5
- Make 4/5 have a common denominator with 7/10 by multiplying 4/5 by 2/2.
Add 7/10 and 8/10.
Simplify 15/10 by dividing both sides by 5/5.
- 15/10 ÷ 5/5 = <u>3/2 </u>or<u> 1 1/2</u>
Answer:
t = 15825.11 years
Step-by-step explanation:
From the given information:
We can make use of the activity of the sample present after time "t" to determine the age of the sample.
This can be expressed by the formula:
--- (1)
where;
= activity of the sample at time t = 0
= disintegration constant
If we replace the value of into equation (1), we have:
By rearrangement:
t = 15825.11 years