Peter will roll a fair die a total of 90 times. what is a good prediction for the number of times that the number cube will land on a number greater than 2?

the discriminant is 64 + 4*1*12 = 112

this is prime.

step-by-step explanation:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!