PLS HELP ASAP What is the distance between z1 = 5 - 2i and z2 = 8 + i?
A. 2sqrt3
B. 18
C. 13.3
D. 3sqrt2

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?