18. Find " y " when x = - 4.25

y = 20x - 16x²

Find the distance between - 8 and 16 using the distance formula

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The sum of four times a number and three is the same as the difference of twice the number and eleven. find the number.

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Calculate the difference scores for the following data from a repeated measures study. Conduct a repeated measures t-test at aplha=.05 to find whether there was a change in scores. Subject A:Pre test score=34 post test score=39.

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