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

Jonathan took 5 minutes to walk to the bus-stop, then spent 63 minutes waiting for the bus. If the bus journey to his school took 10 minutes, how much time did

express (m+n)3 in expanded form

When editing your response, which of the following is NOT something to consider to improve your essay? A. Attack the author more to discredit his or her argumen

What are the hallmarks of Abstract Expressionism? Choose one • 3 points A.There are no objects or recognizable things of the visual world B.There are highly det

Describe sound and record

how do cells of plant devide without centrioles? explain

subtact (7x+2) from (-6x+8)

ballet dancers learn five bassic positions for the arms and feed A. All of B. Of every C. All D. Every

Instructions: The polygons in each pair are similar. Find the missing side length.

Causes and consequences of discriminating women ?