Can somebody help me with this question. Thank you!

Ajar contains a mixture of 20 black marbles, 16 red marbles, and 4 white marbles, all the same size. find the probability of drawing a white or red marble on the first draw. 125 12 01 next question ask for turn it in

Find the area of the regular hexagon if a side is 20 cm.

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers