Which of the following operations would not create an equivalent matrix? A. Switching two rows
B. Adding two rows together and replacing one of those rows with the result
C. Adding a constant to every element of a row
D. Multiplying every element of a row by a constant

Acoin is tossed twice. let e e be the event "the first toss shows heads" and f f the event "the second toss shows heads". (a) are the events e e and f f independent? input yes or no here: yes (b) find the probability of showing heads on both toss. input your answer here: preview

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?