A bird is spotted from Stations A and B that are 10 miles apart. If the angle of elevation from station A is 25 degrees and from Station B is 15 degrees, which station is closest to the bird and by how much?

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

Aphrase is shown read the phrase and give me the answer

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.