If m and n are the roots of 2x²-9x+9=0, find the exact value of mn(m+n)

Final answer is 5/6.

Step-by-step explanation:

Given that you roll a standard six sided number cube.

Now we need to find about what is the probability of rolling a prime number or a number greater than 3.

Total numbers in a six sided cube = 6 {1,2,3,4,5,6}

Total prime or numbers greater than 3 in a six sided cube = 5 {2,3,4,5,6}

Hence probability of rolling a prime number or a number greater than 3 = [favorable number of events] / [total possible events] = 5/6

Hence final answer is 5/6.