Answers

1. If  She has rolls of dimes worth 5 dollars each, and rolls of nicklets worth 2 dollars each. how many rolls of each kind does she have is: 3 rolls of dimes and 4 rolls of nickels​

   Number of rolls of dimes and nickels

   Number of rolls of dimes = x

   Number of rolls of nickels = y

   Total number of rolls = 7

   x + y = 7 …… Equation 1

   Total amount = $ 23

   5x + 2y = 23 ——– Equation 2

   Solving the two equation

   x + y = 7

   x=7-y

   Substitute into equation 2

   5x + 2y = 23

   5(7-y)+2y=23

   35-5y+2y=23

   Collect like terms

   -3y=23-35

   -3y=-12

   Divide both side by -3y

   y=-12/-3

   y=4 nickels

   Substitution

   x+y=7

   Where y=4

   x+4=7

   x=7-4

   x=3 dimes

   Therefore If  She has rolls of dimes worth 5 dollars each, and rolls of nicklets worth 2 dollars each. how many rolls of each kind does she have is: 3 rolls of dimes and 4 rolls of nickels​

   Learn more about Number of rolls of dimes and nickels here:https://brainly.com/question/17480906

   #SPJ1

   Reply