Answer:
216 square yards
Step-by-step explanation:
From the system of equations given, it is correct to state that:
- System A has two real solutions
- System B has two real solutions
- System C has one real solution.
<h3>What are system of equations?</h3>
System of equations refers to a matrix that has elements which are representative of the coefficients of the given equations.
<h3>What are the solutions to the above systems of equations?</h3>
System A:
x² + y² = 17
y = -1/2x
The two real solutions to the above system is given as:
and
System B:
y = x² - 7x + 10
y = -6x +5
The two real solutions to the above system is given as:
System C
y = -2x² + 9
8x-y = -17
The one real solution is given as:
x = -2, y = 1
Learn more about system of equations at:
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Step-by-step explanation: This simple confidence interval calculator uses a Z statistic and sample mean (M) to generate an interval estimate of a population mean (μ).
Note: You should only use this calculator if (a) your sample size is 30 or greater; and/or (b) you know the population standard deviation (σ), and use this instead of your sample's standard deviation (an unusual situation). If your data does not meet these requirements, consider using the t statistic to generate a confidence interval.
where:
M = sample mean
Z = Z statistic determined by confidence level
sM = standard error = √(s2/n)
As you can see, to perform this calculation you need to know your sample mean, the number of items in your sample, and your sample's standard deviation (or population's standard deviation if your sample size is smaller than 30). (If you need to calculate mean and standard deviation from a set of raw scores, you can do so using our descriptive statistics tools.)
The odd one out would have to be 7:41 because 7x6 is 42 which is the pattern thats happening