Marissa is researching information about martial arts students. She found that 7 out of 12 martial artists practice every day. There are 144 martial arts students at a school.
Marissa can use the information she found to estimate how many martial arts students at the school practice every day.
To do this, she can use proportions:
7/12 = x/144
where x is the estimated number of martial arts students who practice every day.
To solve for x, she can cross-multiply:
12x = 7 * 144
x = (7 * 144) / 12
x = 84
So Marissa can estimate that about 84 out of the 144 martial arts students at the school practice every day.
WHAT IS THE CHARGE OF 84
It is not clear what you mean by "the charge of 84." Can you please provide more context or information so I can better understand your question and provide an accurate answer?
What is the sample size 84
In statistics, a sample size refers to the number of observations or individuals included in a sample. So, if the sample size is 84, it means that there are 84 individuals or observations in the sample being studied. The sample size is an important consideration in statistical analysis, as it can affect the accuracy and reliability of the findings.
To calculate the number of martial arts students who practice every day, we need to use the information given.
First, we know that there are 144 martial arts students at the school.
Next, we are told that 7 out of 12 martial artists practice every day. This means that the ratio of martial artists who practice every day to the total number of martial artists is 7:12.
To find the number of martial artists who practice every day, we can set up a proportion using the information given.
Let's call the number of martial artists who practice every day "x".
So, we have the proportion:
7/12 = x/144
To solve for x, we can cross-multiply and then divide:
12x = 7 * 144
12x = 1008
x = 1008/12
x = 84
Therefore, there are 84 martial arts students who practice every day.