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

A college student earned $5100 during summer vacation working as a waiter in a restaurant on the boardwalk at the beach. The student invested part of the money

The second hand of a clock is 8 cm long what is the distance of the tip of the second hand travel in 10 minuets

can you guys please help me answer all of those questions on the picture?? I'm having some difficulties! thanks

What are the avoir expressions in these questions? THANK YOU!!!!!!!!!

A football player runs at 8m/s and plows into a 80kg referee standing on the field causing the referee to fly forward at 5m/s. If this were a perfectly elastic

Slope: -5, y-intercept:3

URGENT!! PLEASE HELP!! I need to finish this for homework before tommorow comes! I need your help ASAP!! So I don't understand this, can you guys help explain t

You are holding a block of wood with dimensions 3 cm x 6 cm x 9 cm on the palm of your hand. Which side must be touching your hand for you to experience the gre

What British law Required American colonist to house British troops

resistance to slavery