Solve for z.

–2.9 + 4.2z = –14.73 − 12.74 + 0.3z

z =

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.

Two cities a and b are 1400km apart and lie on the same n-s line. the latitude of city a is 23 degrees. what is the latitude of city b. the radius of the earth is approximately 6400km.

What are the solutions of the equation x4 – 5x2 – 14 = 0? use factoring to solve. someone !