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

100.5 divided by 1.5

During Medieval times, secular music was outlawed by the church and was not played.

Why is faulting most likely to occur near Earth's surface and not deep within Earth?

in what three ways can companies consolidate

Drinking too much water during exercise can cause a condition in which the concentration of sodium in the blood is lower than normal. What response do you expec

most of the imagery in a poem is designed to appeal to the reader's

What is the minimum number of days that adults should do strength-training exercises each week?

Yuri has a rope 12m long. He cuts it into pieces that are each 2m long. What fraction of the rope is one piece? Draw a picture

12. What were the results of Japan’s growing imperialism at the end of the 19th century?

Which best describes how Aaron feels when he and Zlateh are trapped by the snowstorm?