kiammmiller2836 kiammmiller2836
  • 14-11-2017
  • Mathematics
contestada

The jar only contains nickels and dimes altogether there are 10 coins total of the value is 90 cents how many nickels and how many dimes are there in the jar

Respuesta :

peridorito8864
peridorito8864 peridorito8864
  • 14-11-2017
Write a system of equations and solve.

x + y = 10
5x + 10y = 90

Multiply and combine equations

-5x - 5y = -50
5x + 10y = 90
------------------
5y = 40
y = 8
x = 2

There are 2 nickels and 8 dimes in the jar. Hope this helps! :)
Answer Link

Otras preguntas

Most of the immigrants to the united states from the mid-1990s to the present day have come from
Why did the south have more problems than the north after the american civil war?
Which statement is correct? A. Both plants and fungi undergo photosynthesis. B. Both protists and fungi are eukaryotic. C. Like some prokaryotes, fungi
Which of the following items found in a newspaper is meant to express opinions and comment on the news?
Someone please help me
The surface area of a cube is 600 square inches. What is the area of one of its faces? 6 square inches 36 square inches 75 square inches 100 square inches
Why were members of the Powhatan Confederacy less likely to be enslaved than African Americans?
Which statement best describes the relationship between an object's density and its index of refraction? A. As the mass per unit volume of the substance increas
Five times a number decreased by 24, is greater than 3 times the number. What numbers satisfy this condition?
The classification of a particular type of information that determines the types of values you can enter in that field is the: