Let a >= b.
show that gcd(a, b) = gcd(a-b, b)

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.

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.