BriLovesgo BriLovesgo

Mathematics

Answered

A bag contains 21 coins consisting of nickles and dimes. The total value of the coins is $1.70.
Write a system of equations that models this situation. How many nickels are in the bag?

Answer :

0wiseman841go 0wiseman841go

Answer:

8

Step-by-step explanation:

x = nickles

y = dimes

0.05x + 0.10y = 1.70

x + y = 21

y = 21 - x

0.05x + 0.10 (21 - x) = 1.70

0.05x - 0.10x + 2.10 = 1.70

-0.05x + 2.10 = 1.70

-0.05x = -0.40

x = 8

Answer Link

Go Teaching: Other Questions

What Is The Annual Opportunity Cost Of A Checking Account That Requires A $300 Minimum Balance To Avoid Service Charges? Assume An Interest Rate Of 3 Percent. (

Describe Which Countries Have The Fastest Population Growth And Which Have The Slowest And Why? To Describe And Explain The Causes And Effects Of Global Warmin

What Battle Marked A Major Loss For The Japanese In 1939 Against The Soviets?

2. Given The Equation Of A Line, Y = 1/5x, The Slope Is:

What Is The [H+] If The PH Of A solution Is 11.3? [H+] = [? ] × 10^[?]]

While Doing Field Research, Two Scientists Discover A New Species Of Plant. They Take The Plant Back To Their Lab To Watch How It Grows And Reproduces. Soon, Th

Parallelogram Has 2 Pairs Of Congruent Sides And The Opposite Angles Are Equal.

Research The Tourist Attractions In Costa Rica. Write A News Report In Spanish About The Attractions In Spanish For The Travel Supplement Of A Newspaper. Includ

A System Of Inequalities Is Shown. The Graph Shows A Dashed Upward Opening Parabola With A Vertex At Negative 2 Comma Negative 6, With Shading Inside The Parabo

If $200 Is Put In The Bank And Each Year The Account Earns 5% Simple Interest, then How Much Interest Will Be Earned In Two Years? $10 $20 $30 $100

Which Is A Long-term Benefit Of Healthy Eating

A LBSW Studies Traumatic Symptoms Among First Responders In The Newtown School Shooting. The LBSW Measures Traumatic Symptoms Of The First Responders Every Two