Probability problem: can anyone check my answers for this?
wayne has 1 ten-dollar bill, 2 five-dollar bills, and 5 one-dollar bills in his wallet.

a) wayne randomly chooses a bill from his wallet, puts it back, then picks another bill, and puts that one back, too. what is the probability that both were five-dollar bills?
would the answer for this be 4/16 or 1/4?

b) wayne randomly pulls out a bill from his wallet, and then, without putting it back, randomly pulls a second bill from his wallet. he then puts both bills back into the wallet. what is the probability that both of the bills pulled out were five-dollar bills?
would the answer for this be 2/8*1/7 = 1/28?
if i'm wrong correct me!

< 4, -5>

step-by-step explanation:

starting from g. we move 4 right and then 5 down to get to h. that means the vector is < 4, -5>

statement #3: proof- ang is congruent to ang ecd : angles are congruent.  

step-by-step explanation:

1: the missing angles in statement #3  

a.) acb  

reason- the reason why the answer is acb is because angle ecd and angle acb are both the same size *that's what the word congruent means this is really simple.  

2: the missing word in reason #3  

c.) vertical  

reason- the reason why the answer is vertical is because the angles in that diagram on figure 2 is slanted, which is vertical, and the e and a both lay on vertical lines. along with the other's, but e and a are the 2 main points you want to focus on. and c is kind of like your starting point, because c is for both angles, not just one.  

i hope that was and understanding.