Abox contains 10 transistors, 3 of which are defective. if 3 are selected at random, find the probability that a. all are defective. b. none are defective.

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Write the expression in simplified radical form. show all steps and work including any foil method work. (hint: use the conjugate. no decimal answers.) (9-2√3)/(12+√3)

Divide. write in simplest form 41/6 divided by 10