Acan contains 18 marbles six red, four white, three blue, and five black, one marble is drawn without looking. what is the probability of selecting a red or black marble?

11:7

Step-by-step explanation:

There are 6 red, 4 white, 3 blue, and 5 blacks

We are asking the probability of black or red so we add 6 + 5 = 11

the rest is 7 so it is 11:7

11:7

yess

step-by-step explanation:

idk whyy this is happening, i cant even read my notification bc i keep getting errors

~coco

the answer is (-4,-4)

hope this ! : d