hmsstudent1313 hmsstudent1313

13-12-2016
Mathematics

contestada

a piggy bank contains 100 coins consisting of nickels and dimes. the total value of the coins is $8.50. How many coins of each type does the bank contain?

Respuesta :

kelemmic kelemmic

13-12-2016

the bank contains 30 nickels and 70 dimes.

Answer Link

passingwithaD passingwithaD

13-12-2016

30 Nickels, 70 Dimes

1 nickel (n) =5 cents
1 dime (d) =10 cents
total value 850 cents
5n+10d=850 divide both sides by 5

n+2d=170 solving with the system of equations we get

n+2d=170
n+d=100

N=30
D=70

Answer Link

Otras preguntas

The coach of the Relay race team promised his athletes a reward if they win gold or silver. The reward is divided up relative to speed. Jenny got a sixth of the

Below are 36 sorted ages of an acting award winner. Find P80. 20, 22, 22, 24, 25, 28, 28, 29, 29, 30, 34, 35, 35, 36, 37, 39, 44, 48, 49, 51, 51, 51, 54, 56, 57

The function y = -0.296x^2 + 2.7x models the length x and height y that your sisters rabbit can jump, in centimeters. How high does the rabbit jump? What is the

The process by which organisms keep their internal conditions fairly constant is called?

Which of the following is a radially symmetrical animal with stinging tentacles? A.) Sponge B.) Cnidarian C.) Arthropod D.) Roundworm

Witch genre uses narrative and poetic techniques to tell a story

If you ate bacon and fried eggs for breakfast, the largest component of the energy would come from the ______. A) carbohydrates B) fats C) proteins D) sugar

The curve y = ax^2 + bx + c passes through the point (2, 32) and is tangent to the line y = 4x at the origin. Find the values of a, b, and c.

which statement is true about roman, byzantine, and islamic mosaics and tile work? a. they show religious images but not geometric motifs. b. they were always m

Hey , I need help with this question