In parallelogram lmno, mp = 21 m, lp = (y + 3) m, np = (3y – 1) m, and op = (2x – 1) m. what are the values of x and y? x = 10 m, y = 1 m x = 10 m, y = 2 m x = 11 m, y = 1 m x = 11 m, y = 2 m

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?