Tutors Answer Your Questions about Radicals (FREE)
Question 976954: What are the mean and standard deviation of the data -6,12,2,-4,1,6,0,3?
a. the mean is 2 1/3 and the standard deviation is approximately 5.6252
b. The mean is 2 1/3 and the standard deviation is 5.
c. The mean is 1 3/4 and the standard deviation is approsimately 5.6252
d. The mean is 4.86 and the standard deviation is 5.63.
Click here to see answer by Cromlix(4381)  |
Question 976953: which of the following best describes imaginary numbers?
a. They are not numbers, but are useful in solving equations.
b. they are the values of expression of the form sqrt-a for various real numbers a, as long as a does not equal 0.
c. They are the complex numbers
d. they consist of two values, the principal imaaginary number i and its negative -1.
Click here to see answer by Alan3354(69443)  |
Question 976951: to solve sqrt x + sqrt x-5=5 for x, begin with which of these steps?
a. isolate on radical expression
b. square both sides of the equation
c. combine the two like radicals, then square both sides.
d. eliminate the negative in the second radical expression.
Thank you
Click here to see answer by Alan3354(69443)  |
Question 977059: choose the best description of the radical expression ^3 sqrt -9
a. It can be simplified, but the result is a complex number.
b. It can be simplified to -^3 sqrt 9 but no further
c. It is in simplified form
Click here to see answer by FrankM(1040)  |
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