jennabroussard2006 jennabroussard2006
  • 11-03-2021
  • Mathematics
contestada

-. A collection of 40 coins is made up of nickels and dimes and is worth $2.60. Find how many were
quarters and how many were nickels.

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 11-03-2021

9514 1404 393

Answer:

  • 0 quarters
  • 28 nickels

Step-by-step explanation:

Let d represent the number of dimes. Then 40-d is the number of nickels. The value is ...

  0.10d +0.05(40 -d) = 2.60

  0.05d = 0.60 . . . . . subtract 2.00

  d = 0.60/0.05 = 12 . . . . . the number of dimes

  40 -d = 40 -12 = 28 . . . . .the number of nickels

__

There are 0 quarters. There are 28 nickels.

Answer Link

Otras preguntas

-x² + 4x - 4 = 0 Solve the equation
compare and contrast the structure of the daughter cells with that of the original parent cell
Can I write an equation in point-slope form when having a slope of zero?
5x-1=15x-101 equation
how can i show my work for 2x-4= -10+x
how much is 77 divided by 5
Which of the following are effective ways of practicing your speech? presenting it in front of a mirror recording it with a video camera presenting it to fa
Value of 3y - 10 when y = -1
How many factors are in the expression 2w(w+9)
How do the skeletal system and the lymphatic system work together to protect the body from disease?