What is -3 13/20 in a rational number as a decimal

Question 5 spring semester final exam math evaluate

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

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.