laurenelizabet laurenelizabet
  • 12-06-2017
  • Mathematics
contestada

Peggy had 3 times as many quarters as nickels. She had 1.60 in all. How many nickels and how many quarters did she have

Respuesta :

wolf1728
wolf1728 wolf1728
  • 14-06-2017
It doesn't seem to work with $1.60 total.
It DOES work with a $16.00 total.

A) 3n = q
A) 3n -q = 0
B) .05n + .25q = 16.00
Multiplying equation A by .25
A) .75n -.25q =0
B) .05n + .25q = 16.00
.80n = 16.00
20 nickels = 1.00
60 quarters 15.00


Answer Link

Otras preguntas

4w-3≥33 whats the anser
3m - 9n = 24 when n=-1, 1, 3
How does the articles of confederation reflect the principles outlined in a limited government?
The movie house gives away a $5 coupon for every 4 movies purchased.They give away a bag of popcorn for every 3 movies purchased.How many movies would you have
4(5n-7)=10n+2 9(x+3)=4x-3
can you simplify 17/15
Consider the constant function P(x)= -.5. Find P(1269.35). Does the function P have any zeros? Explain.
how to factor by grouping to factor 4x^3+12^2-9x-27
What is the radius of a circle with circumference 17mm? Round to nearest tenth. Use 3.14
structures within the cytoplasm of eukaryotic cells are called