Solve the question below.
A + C =5
C + D = 4
C - A = 1
What is D + A?

How can you find the conditional probability of a given b as the fraction of b’s outcomes that also belong to a, and interpret the answer in terms of the model? i just need a good explanation

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

The triangles in the diagram are congruent. if mzf = 40°, mza = 80°, and mzg = 60°, what is mzb?