A bank Teller has a total of 56 five dollar bills in her cash drawer the value of the bill is 520 if X represents the number of $20 bills and Y represents the number of five dollar bills determine the number of $20 bills are in her drawer about solving systems

There are 16 $20 bills in the drawer

Step-by-step explanation:

Since we have a total of 56 bills;

x + y = 56 •••••••(i)

total of the $20 bills will be 20(x) = $20x

Total of the $5 bills will be 5(y) = $5y

adding together gives $529

5y + 20x = 520 •••••••(ii)

From the first equation;

y = 56 - x

Put this in the second equation

5(56-x) + 20x = 520

280 - 5x + 20x = 520

15x = 520-280

15x = 240

x = 240/15

x = 16

amount of oatypop that contains the prize = 40%

amount   of oatypop which doesn't contain the prize = (100-40)=60%

probability that hannah will win a prize

    = s +f s +f f s+ff   f s+ff f f s+ infinity.where f= failure,s= success

=   or 60%

probability that hannah only has to buy 3 or less boxes before getting a prize= (s) and ( f s) and (ff s) and (f f f s)

        = = 87.04 %  

step-by-step explanation:

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.