Well,you have the answer on your paper already...
Answer:
C
Expand the bracets then simplfy and then factorise
12/-30=8x
cross multiply
12x=-240
x=-20
Because u r adding irrational to rational its like if u add a whole number to a negative number u get deeper into negatives in this case irrational is the negative and rational is the whole<span />
1) The probability of getting a queen is 187/10000 which is 0.0187 = 1.87%
2) The probability is 449 / 479 which is 0.937 = 93.7%
You may need to round the answers. It doesn't say if they need to be rounded or not.