A traveler exchanged 138 U. S. dollars for 100 Euros. Which of the following equations shows the equivalent for this exchange? A:1.38 = 19/50 = 0.38%
B:1.38 = 69/500 = 0.138%
C:1.38 = 69/5 = 0.138%
D:1.38 = 69/50 = 138%

There is diarrhea on the floor. what do i do? my mum gonna see that i diarrhea on the floor! * don't report, i'm serious! *

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.