Rhombus ABCD has coordinates A(0,2), B(2,7), C(7,9), D(5,4). W are the coordinates of the point where the diagonals intersect?
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Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

How many real-number solutions does the equation have? -4x^2 + 10x + 6 = 0 a. no solutions b. two solutions c. infinitely many solutions d. one solution

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