5x - y³ = 135x - y³ = 13 The answer can be obtained by simply putting the ordered pair into the equations. First (2 , -9) 5(2) - (9)³ = 135(5) - (-9)³ = 13 10 + 729 = 675 + 729 = 13 739 = 1404 = 13 This is not true. Therefore this is not a solution Second (3,-6) 5(3) - (-6)³ = 135(5) - (-6)³ = 13 231 = 891 = 13 This is also not true Therefore, neither ordered pair is a solution.
Each is equally likely . The probability of rolling less than 7 is equal to the probability of rolling 1 or 2 or 3 or 4 or 5 or 6. That is 1/6 + 1/6 + 1/6 + 1/6 + 1/6 + 1/6 = 6/6.
