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

In this unit, you studied World War I and World War II. Both of these wars had devastating effects on the nations that were involved in the war. What were some

Jenny is holding a fraction tile labeled 1/3. How many 1/3- fraction tiles are needed to equal the fraction tile labeled 1

Prefix and suffix for chrondromalacia

What element of the plot is this passage an example of

WILL MARK YOU THE BRANLIEST!join sentences together. Serena lives in an apartment. It is on the first floor. A. And B. Or C. But D. As if

In your own words, compare and contrast the French and the Spanish who came to the New World. Identify one way in which they were similar and one way in which t

Plz help me ..............

Which of the following graphs shows a function with a domain of 2

The treaty that ended World War I but was rejected by the U.S. Senate was called the treaty of

Which statement is correct concerning the relationship between chromosomes and genes, chromatin, or sister chromatids? Genes are the DNA - protein material that