Calculate the area of quadrilateral ABCD.
State the units of your answer.
А
7.5 cm
B
18 cm
11.7 cm
D
15.6 cm

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

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

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)