HELP PLSS. Which of these numbers can be divided by 9 with no remainder? 2178, 959, 43,596 Step 1 of To check whether a number is divisible by 9, which rule should you use? O If the last two digits of the number are divisible by 9, then so is the number. O Add the digits together. If the sum of the digits is divisible by 3, then the number is divisible by 9. O If the last digit of the number is 9, then the number is divisible by 9. 0 Add the digits together. If the sum of the digits is divisible by 9, then so is the 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?