Jackie has a box of mixed spring flower bulbs containing 12 daffodils, 10 hyacinths and 14 tulips. jackie reached into the box randomly chooses a bulb and plants it, then chooses another and plants it. what is the probability that the first bulb jackie plants is a daffodil and the second is a hyacinth?

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

You are at a restaurant and owe $56.20 for your meal. you want to leave an 18% tip. approximately how much is your tip?

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?