Answer:
c
Step-by-step explanation:
There are forty cases of insomnia to be used in the study. There are two variables, the therapy and the improvement of sleep. There are two categorical variables in the study.
<h3>What is a variable?</h3>
The term variable refers to something whose value changes. An experiment would always have to variables; the independent variable and the dependent variable. The dependent variable changes when the independent variable is changed.
In this experiment, there are forty cases of insomnia to be used in the study. There are two variables, the therapy and the improvement of sleep. There are two categorical variables in the study.
Learn more about variable:brainly.com/question/17344045
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Answer:
58 ≤ 6r - 6
64 ≤ 6r
10.3 ≤ r
Step-by-step explanation:
So, the rate per 7 minutes is 7:196
To find the unit rate (how many spins per minute) we need to divide the 196 by 7.
196/7 = 28
The unit rate is 1:28
At this rate, the unicycle makes 420 revolutions per 15 minutes. We find this by 28 * 15 = 420.
