Which best explains what determines whether a number is irrational? A. a number that can be written as a decimal that terminates and does not repeat

B. a number That can be written as a decimal that neither repeats nor terminates

C. A number that can be written as a decimal that repeats and does not terminate

D. A number that can be written as a square root that does not result in a hole number

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?