3 Solve x^4+ 3x^2- 4 = 0.
x = #2i or x = £1
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x = £ior x = +2
tv or x = t;
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x = #2 or x = ti

Find the average speed of a rabbit that runs a distance of 22 m in a time of 1.8 s .

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

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.)