Answer:7cm
Step-by-step explanation:
m^3=343
Take the cube root of both sides
m=7
Answer:
A statistic is said to be unbiased if the mean of its sampling distribution is equal to the true value of the parameter being estimated.
Step-by-step explanation:
A parameter is a number that describes the population.
A statistic is a number that describes a sample.
A statistic used to estimate a parameter is unbiased if the mean of its sampling distribution is exactly equal to the true value of the parameter being estimated. For example, the mean of a sample is an unbiased estimate of the mean of the population from which the sample was drawn.
A statistic is biased if its expected value is not equal to the parameter.
See image below it keeps going
Answer: D
Step-by-step explanation:
To find the difference, we want to make sure both denominators are equal.
Now that the denominators are equal, we can distribute and multiply out.
With the fractions multiplied out, we can actually put it into one large fraction.
Let's subtract the top expression.
This may seem like our final answer, but we can actually factor out an 3x in the numerator and denominator.
With the 3x factored out, they cancel out because 3x/3x=1.
Our final answer is:
Answer:
3/1
Step-by-step explanation:
Using the similarity statement, ∠A corresponds with ∠D; ∠B corresponds with ∠E; and ∠C corresponds with ∠F.
The only angle of triangle DEF we have is ∠E, which is 7. This corresponds with ∠B; this makes the scale factor of ABC to DEF
21/7 = 3/1.
