Answer:
A. 0.78 g
Step-by-step explanation:
The <em>half-life</em> of F-20 (11 s) is the time it takes for half of it to decay.
After one half-life, half (50 %) of the original amount will remain.
After a second half-life, half of that amount (25 %) will remain, and so on.
We can construct a table as follows:
No. of Fraction Mass
<u>half-lives</u> <u>t/s</u> <u>Remaining</u> <u>Remaining/g
</u>
0 0 1 25
1 11 ½ 12.5
2 22 ¼ 6.2
3 33 ⅛ 3.1
4 44 ¹/₁₆ 1.6
5 55 ¹/₃₂ 0.78
6 66 ¹/₆₄ 0.39
We see that 0.78 g of F-20 remain after five half-lives (55 s).
Using the together rate, it is found that if Mrs Adams camps alone, she will use all the water in 24 hours.
<h3>What is the together rate?</h3>
The together rate is the sum of each separate rate.
In this problem, the rates are:
Hence:
If Mrs Adams camps alone, she will use all the water in 24 hours.
More can be learned about the together rate at brainly.com/question/25159431
Tough call.
You may have to use Newton's Method or something like that.
Graph y=2^x and then graph n/x on the same set of axes. You may have to assign some arbitrary value to n to make this work. From the graph you can read off the approximate coordinates of the point of intersection.
22.5 ft because it is a ratio
4:9
2:4.5
X5 both sides
10:22.5 ft
Are you trying to get "x" because if not, that is the answer. because it is in y=mx+b form