6.3078 how do you say this is word form
2 answers:
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The amount of drugs that will be left after 12 hours is 17.42 mg provided Sarah takes 550 mg of an antibiotic every hour.
<h3>What is exponential decay?</h3>Exponential decay can be described as a reduced amount of an original substance by a definite percentage over a period of time. It can be determined by using the formula:
where;
- y = total amount,
- a = initial amount = 550 mg
- r = the growth rate = 0.25
- t = number of growth periods = 12 hours
y = 17.42 mg
Therefore, we can conclude that the amount of drugs that will be left after 12 hours is 17.42 mg.
Learn more about the exponential decay model here:
Answer:
16 students take only English or only Math.
Step-by-step explanation:
We can solve this problem by treating these values as sets, and building the Venn Diagram.
I am going to say that:
A is the number of students who take Math.
B is the number of students who take English.
C is the number of students who take History.
We have that:
In which a is the number of students that only take Math, is the number of students who take both Math and English,
is the number of students that take both Math and History, and
is the number of students that take all these classes.
By the same logic, we have:
This diagram has the following subsets:
There were 42 students suveyed. This means that:
We start finding the values from the intersection of three sets.
12 students said they take math, English, and history. This means that:
18 students said they take English and history. This also takes into account those who take math, english and history. So:
17 students said they take math and English.
15 students said they take math and history
2 students said they only take history.
How many students take only English or only math?
This is a + b, that we can find by the following formula:
16 students take only English or only Math.