Solve the equation. 3x = 2x + 20 X = Ty!!
2 answers:
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For this case we have the following data:
Drained 3.5 Liters in 4 days. If we want to know the volume of water per day, we make a rule of three:
3.5 Liters -----> 4days
x Liters --------> 1 day
Where x represents the amount of water drained each day.
So, we have to:
Liters per day
So, the average change in water volume each day is: Liters per day
Answer:
Liters per day
Answer:
There are 8 friends and the presents costs $30,000
Step-by-step explanation:
Let x be the number of students and y be the price of the present. Their contributions can be expressed as:
#Make y the subject in equation i then substitute in ii:
Hence, there are 8 friends and the present is priced at $30,000
The sample standard deviation is used to calculate the determine the spread of estimates for a set of observations (i.e., a data set) from the mean (average or expected value).
<h3>What is sample standard deviation?</h3>The spread of a data distribution is measured by standard deviation. The average distance between each data point and the mean is measured.
The sample standard deviation (s) is a measurement of the variation from the expected values and is equal to the sample variance's square root.
where
s = sample standard deviation
N = the number of observations
= the observed values of a sample item
= the mean value of the observations
Learn more about simple standard deviation, refer:
#SPJ4