Olivia rolled two number cubes with sides numbered one through six. the sum of the two numbers she rolled was eight, and the probability of getting a sum of eight is 5/36. the probability of getting other possible sums when two number cubes are rolled is given in the table. 1. estimate the number of times that the sum will be 10 if the two number cubes are rolled 600 times. show work and explain.

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?