For which pairs of functions is (f•g)(x)=x?

a. f(x)=x^2 and g(x)=1/x
b. f(x)=2/x and g(x)=2/c
c. f(x)=x-2/3 and g(x)=2-3x
d. f(x)=1/2x-2 and g(x)=1/2x+2

pls

Suppose that an airline uses a seat width of 16.516.5 in. assume men have hip breadths that are normally distributed with a mean of 14.414.4 in. and a standard deviation of 0.90.9 in. complete parts (a) through (c) below. (a) find the probability that if an individual man is randomly selected, his hip breadth will be greater than 16.516.5 in. the probability is nothing. (round to four decimal places as needed.)

In the diagram, the ratios of two pairs of corresponding sides are equal to prove that almn - axyz by the sas similarity theorem, it also needs to be shown that x 6 z un z zz un = 2x zləzz lezy

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?