The seats in a theatre are priced so that the seats nearest to the stage are the most expensive and the price decreases each row back from the stage. In row A (nearest to the stage) the seats are $50 each. In row B the seats are $47.50. In row C the seats are $45 etc. a) What is the formula for the nth term in this arithmetic sequence?
692. Сколько килограммов содержится в 2683 г? =2683/1000=2.683 кг
693. Выразите 397 400 см: а) в километрах; = 397400/100000=3.974 км б) в метрах.=397400/100=3974 м
694. Выразите 1859 см: а) в метрах =1859/100=18.58 м; б) в километрах 1859/1000000=0.01859 км.
695. Выразите 615 мм: а) в дециметрах; = 615/100=6.15 дм б) в сантиметрах.=615/10=61.5 см