Which equations illustrate the associative property of addition? choose exactly two answers that are correct.
a. (11 + 2.2) + (–5) = 11 + [2.2 + (–5)]
b. –3 • (5 + 8.5) = –3 • 5 + (–3) • 8.5
c. + 1.8 = 1.8 +
d. –7 + [4 + (–2.1 • 6)] = (–7 + 4) + (–2.1 • 6)

What is the value of x? enter your answer in the box. x = two intersecting tangents that form an angle of x degrees and an angle of 134 degrees.

What is the percentile for data value 6 in the following data set? 4 13 8 6 4 4 13 6 4 13 2 13 15 5 9 4 12 8 6 13 40 25 35 62

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean