How many ways can 8 students be assigned a seat in a classroom if there are 10 seats in a row?

Two fire-lookout stations are 190 miles apart, with station a directly south of station b. both stations spot a fire. the bearing of the fire from station a is upper n 55 degrees upper e and the bearing of the fire from station b is upper s 60 degrees e. how far, to the nearest tenth of a mile, is the fire from each lookout station?

Ineed ! the person who answers and shows their work on they got the answer first will be marked the !

Suppose i flip two identical coins. what is the probability that i get one head and one tail?