Which number will make the two fractions equivalent 42/50 84/?

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

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

What other information do you need to prove triangle dac=bca by asa