Identify the 12th term of a geometric sequence where a1=8 and a6=-8,192

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.