Прошу. реешите уравнением. от одной пристани одновременно в протиположных направлениях отплыли теплоход и катер через 2 ч пути расстояние между ними было 120 км с какой средней скоростью плыл теплоход, если его скорость была в 2 раза меньше чем скорость катера решить уравнением

скорость катера -y=2 x (v2), скорость теплохода- х. (v1)

известно что общее расстояние между ними s=120 (то есть s1+s2 =120) где s1-это расстояние которое проплыл теплоход, а s2-расстояние которое проплыл катер.

s1+s2=120 (s1=t1*v1,s2=t2*v2, но t1=t2=2 часа)

t1*v1+t2*v2=120

2*x+2*2x=120

6x=120

x=20 км/ч (скорость теплохода)

y=40 км/ч (скорость катера)

Complex "triumph arch" kursk was erected in 2000 in honor of the victory in the battle of kursk, which occurred in 1943. the complex is located in the alley on the victory avenue. the composition of the memorial complex includes the majestic arc de triomphe, a monument to marshal georgy zhukov, three-tiered temple of st. george, as well as the eternal flame and granite tombstone "unknown soldier kursk land" located at the mass grave. the height of the arc de triomphe is 24 meters. at its top is the equestrian statue of st. george, made of bronze, the height of 6.4 meters. on the arch mounted reliefs and text boards, as well as on its body can be seen four bronze figures of russian soldiers of different eras of history. in 2007, the city of kursk was awarded the title of city of military glory. in honor of this momentous event in the territory of the memorial complex was a memorial stele. also, in the alley, you can see examples of the art of the war years, mounted on pedestals. ну как-то честно сама писала!

Kazan - capital of tatarstan one of the major economic, scientific, cultural centers and ancient cities of our countrylocated on a large river volga.standing as the eternal rome, on seven hills.kazan is the capital of the ancient people and ancient country. located now by fate almost in the heart of modern russia.lying just eight hundred kilometers east of moscow, kazan is the capital of the absolutely original people and multinational republic that exists today between the volga and the urals. this nation own language, its own culture, its own ancient traditions and festivals, their own faith, but past and present his most dramatic and sometimes fateful way intertwined with the history and future of russia. this people - the kazan tatars, this country is tatarstan."kazan" in tatar means "pot". the location of the city resembles a basin, boiler.