-3/4×(-12)= ? solve please

An assembly consists of two mechanical components. suppose that the probabilities that the first and second components meet specifications are 0.87 and 0.84. assume that the components are independent. determine the probability mass function of the number of components in the assembly that meet specifications. x

Which point lies on a circle with a radius of 5 units and center at p(6, 1)?

Solve: 3x+y=6 4x-2y=18 show all work !