Answer: The fraction x = 1/2 or its equivalent decimal form x = 0.5
================================================
Work Shown:
AE = 2*(BD)
4x+8 = 2*(4x+3)
4x+8 = 8x+6
8-6 = 8x-4x
2 = 4x
4x = 2
x = 2/4
x = 1/2
x = 0.5
note: the first equation is set up basically saying that AE is twice that of BD; put another way, BD is half as long as AE. This is one property of midsegments. Another property is that AE and BD are parallel.
another note: if x = 0.5, then AE = 4*x+8 = 4*0.5+8 = 10 while BD = 4*x+3 = 4*0.5+3 = 5, showing that AE is indeed two times longer than BD.
To get your answer just multiply 11 times pi, then square it
Answer:
Given:
Standard deviation or variance of two population.
We need to write a method by which a formal hypothesis test can be conducted of claim made about two population standard deviations or variances.
In General Chi-Square test and F-test are used for variance or standard deviation.
Also Chi-Square test and F-test require that the original population be normally distributed.
Now for Testing a Claim about Variance or Standard Deviation
To test a claim about the value of the variance or the standard deviation of population, then we use the test statistic which follows chi-square distribution with n − 1 degrees of freedom, and is given by the following formula.
Where s is for given standard deviation and is for claimed standard deviation.
First we make Hypothesis, then we choose the value of α ( level of significance ), after that using above formula we find value of chi-square.
then we find table value for the chosen α also known as table value or p-value. Finally we give final answer by checking relation between p-value and α.
If p-value < α then null hypothesis is rejected
If p-value > α then null hypothesis accepted.
Answer:
I think you must be adding or multiplying each number across.
Step-by-step explanation: