Which property justifies rewriting the equation 1/6 • 6 + z = 8 as 1 + z = 8? a. Additive Identity Property b. Multiplicative Identity Property c. Multiplicative Inverse Property d. Substitution

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab