Which is the best estimate for the product of 214.628 × 423,893.14? 88,200,000 882,000 8,820,000 882,000,000

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.

Marking brainliest rewrite the equation x = 65 - 60p by factoring the side that contains the variable p.

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?