Abox contains 12 transistors, 3 of which are defective. if 3 are selected at random, find the probability that none are defective.

explain how you get the answer, i know it involves a #c#

Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = a0 and the hypotenuse = a1

Use sigma notation to represent the following series for 9 terms.

What is the value of x? enter your answer in the box.