Известно, что для любого натурального n сумма S первых n членов некотрой арифметической прогресси выражается формулой S = 2n2 +n. Найдите первый член прогрессии и её разность.

помогите решить. периметр равнобедренного треугольника равен 128 см, его основание 48 см.найдите радиус окружности вписанной в треугольник.

Найдите наименьший по модулю член арифметической прогресси -15,1 ; -14,4; ...

СРОЧНООО!!!!В трапеции ABCD угол A = 90 градусов, AC = 6 корней квадратных из 2, BC = 6, DE - высота треугольника ACD, а tg угла ACD = 2. Найдите CE

Put the verbs in right forms and translate the text.

CORINTHIA AQUINCUM

The Corinthia Aquincum Hotel (to locate) on the Buda side of the Danube river, right at the Arpad Bridge, opposite to the beautiful Margaret Island. The inviting hills and forests of Buda (to be) just a few minutes away. As the Roman legions (to build) their first camp in the region right here and later the civil town of Aquincum (to be) established next to it, one can (to find) many remains from that period in the district. The nearby amphitheatrum once (to serve) as a circus and the ruins of the one-time city can (to find) in the Aquincum Museum, at just a small distance from the hotel. Also downtown Budapest and the Danube Bend (to be) within easy reach of the hotel.

The hotel (to open) in 1991 as the Thermal Hotel Aquincum, as a tribute to the ancient city and its baths. The spa of the hotel (to receive) its healing water from a natural thermal spring on the nearby Margaret Island. A considerable part of the hotel's medical treatments, described as „balneotherapeutic treatments" (to base) on thermal water. In 2002 the medical section of the hotel (to transform) into a well-equipped, unique wellness center offering more than 50 health and wellness therapies.

The hotel (to have) 310 spacious, modern rooms with bathroom, minibar, direct dial telephone, radio, colour TV with satellite channels and easy, high-speed Internet access. (Most of them with view on the river Danube and Margaret Island).Guests can (to benefit) from 24-hour room service and all the other amenities of a 5 star hotel. A business centre, laundry service, beauty salon, boutiques and secured underground parking (to complete) the hotel's facilities.