The picture below shows a shaded rectangular region inside a large rectangle. What is the probability that a point chosen inside the large rectangle is not in the shaded region? (5 points)

A. 18%
B. 36%
C. 64%

Need on this geometry question. explain how you did it.

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

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?