Solve the system of linear equations. - 4y +12w= -8
3x +3y + 6z - 15w = 9
2x + 5y-z-9w= -3
2x + y - z+3w=-11

Sorry guys but as you have a small brain

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how

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.