Answer: 0 0769
Step-by-step explanation:
Let x be the number of students that offer both subjects
15 - x + x + 13 - x + 9 = 26
-x + 37 = 26
-x = -11
x = 11
Number of student that offer english but not math = 13 - 11 = 2
The probability of english but not math = 2/26 = 0.0769
Answer:
-4.66667 (the 6. is repeating)
after 6.2 hours the dose will decay to 70% in your bloodstream.
<h3>How long you must wait for the dosage to decay to 70% in your bloodstream?</h3>
We know that the half-life is 12 hours. Then the exponential relation for an initial dosage of A is:

If the dosage needs to decay to a 70% of the initial dosage, then we must have:

Now we need to solve that for t:
If we apply the natural logarithm in both sides, we get:

So after 6.2 hours the dose will decay to 70% in your bloodstream.
If you want to learn more about half-life:
brainly.com/question/11152793
#SPJ1
Answer:
8in
Step-by-step explanation:
I hope this helps. have a great dsy
Answer: I can’t open it sorry
Step-by-step explanation: