Which number is irrational?
1) -4
2) 2/9
3)
4) 8.25...
Answers: 2
Mathematics, 21.06.2019 12:40
Which shows the image of rectangle abcd after the rotation (x, y) β (βy, x)?
Answers: 3
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The sum of two numbers is 86, and their difference is 20. find the two numbers
Answers: 2
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The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%
Answers: 1
Mathematics, 21.06.2019 19:30
If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m β 1) : (2n β 1).
Answers: 3
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