thy2002nguyen thy2002nguyen

01-12-2014
Mathematics

contestada

Phil has 50 nickels and dimes worth $4.15. How many of each coin does he have?

Respuesta :

01-12-2014

[tex]x-number\ of\ nickels\\50-x-number\ of\ dimes\\\\0.05x+0.1(50-x)=4.15\\0.05x+5-0.1x=4.15\\0.05x-0.1x=4.15-5\\-0.05x=-0.85\ \ \ \ |:-0.05\\x=17\\\\50-17=33\\\\He\ have\ 17\ nickels\ and\ 33\ dimes.[/tex]

Answer Link

Otras preguntas

HELP ME ANSWER THESE PLZ

Divide the following polynomials. Then place the answer in the proper location on the grid. Write the quotient and remainder as a sum in this format: . Do not i

Animals are associated with _____, and plants are associated with

Where can you find fungal spores

What was the conflict between larger and smaller states over representation in Congress

Help me on this one NOW

what is government? shutdown a group of people that is focused on the survival of a community a group of people that makes and enforces rules for a community a

What is the purpose of a frogs heart cutaway

Consider the following incomplete deposit ticket: How much cash did Liz receive? Please select the best answer from the choices provided $458.57 $670.71 $323.54

PLEASE HELP ME I'M BEING TIMED!! Jim is trying to determine the height of a flagpole using shadows. Jim is 6 feet tall and his shadow is 9 feet long. At the s