raquelrios0622 raquelrios0622

03-04-2020
Mathematics

contestada

John saved 65 coins. He saved nickels and dimes only. If he had totally $4.90, how many nickels did he have?

Respuesta :

johnsong14306 johnsong14306

03-04-2020

Answer:

Step-by-step explanation:

Let n = nickels and d = dimes

n+d = 65

5n+10d = 490

Solve for n:

n = 65 - d

Substitute the equation:

325 + 5d = 490

5d = 165

d = 33

Answer Link

Otras preguntas

You are writing a formal comparison-and-contrast essay comparing two after-school activities for your teacher. Which detail should you include? how your parents

3. How fast does the motor-generator of an HEV turn the engine when starting?

Holger: __hallo___ , Kurt! Kurt: Hallo, Holger! ______ ______. Holger: Wie _____ ? Kurt: Es geht mir _____. Und dir? Holger: Es geht mir _____.

how is health care a problem in today's society

How many moles of zinc oxide can be produced from 2.7 moles of oxygen

Mark all the statements that are true. A. The range for this function set (3) B. All real numbers are in the range of this function C. This graph is not a func

There are mountains on the surface of the moon that are as tall as mountains here on Earth. a. True b. False

given f(x)=-2x+5 find the inverse

John's grandfather clock has a pendulum that keeps the seconds. What does this graph say about the observed pattern of motion?A) The pendulum swings with a con

What can you conclude about the population of Africa based on this information?