Assume the random variable x is normally distributed with mean u = 90 and standard deviation o = 4. Find the indicated probability. P(77 P(77 (Round to four decimal places as needed.)
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Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?