Plzz ill make your answer the brainiest answer

10: P∪R\O,     b) an example could be 9.(8)     11)x= 1/3, y=-2

Step-by-step explanation:

basically means the union of P and R without the part that O overlaps

so the intersection, or the same in both of A and B. Also irrational means not able to write as a simple fraction, so things like 9.(8) ( the parenthesis means continuously, so like 9.8888888888888888888888888888 and so on) and this number also has to be between 9 and 10 so numbers like this(9.(8))

the second equation can be simplified to 3x-y=3, or 3x-3= y. so we plug this into the first equation to get 9x +4(3x-3)=-5. simplify and you get 9x+12x-12=-5, 21x=7, x= 1/3. now we plug this equation into one of them, such as the second one to get  6(1/3)-2y=6. simplify to get 4= -2y, y=-2

and sorry i didn't get what you meant by the other one at first

5.5

step-by-step explanation:

1) is right

step-by-step explanation: