Use the given information to find the indicated probability. p(a ∪ b.= .9, p(b) = .8, p(a ∩ b.= .4.find p(a).p(a) = incorrect: your answer is incorrect.

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10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.