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

What can be inferred about Roman culture based on the fact that City describes several public baths being built in Verbonia? A. Having places to socialize was i

list all the proper nouns The last group of raiders to terrorize western Europe were the Vikings, fierce Scandinavian warriors who almost overran England befo

The name of juliet's kinsmen whom romeo killed was _______ Is it Tybalt? I'm not sure. I know Romeo killed Tybalt and Paris

Which statement best defines ekphrastic poetry? A) Ekphrastic poetry recalls biographical details of famous painters. B) Ekphrastic poetry offers rhyming critic

What would happen if CCD (Colony Collapse Disorder) killed all the honey bees?

Mexico's economy is mostly based on... a) oil exports b) mining c) agriculture and livestock d) industry ????

I really need this ASAP! what is 14 2/7 as a fraction

when magma reaches the Earths surface its called? A. Lava B. fissures C. deccan traps D. basalt

Which of the following expressions is equivalent to 6 - (-5)? a. 6 - 5 b.6 + 5 c.-6 + 5 d.-6 + (-5)

What is the main reason Australia and New Zealand have such unique biodiversity? A. Both nations have laws that protect endangered species. B. They