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

One characteristic used to place organisms into kingdoms is blank

During interphase, the DNA in the nucleus of the cell is thin and threadlike and called _____.

Different types of fonts are used for emphasis or visual appeal only

HELP PLEASEEEEE i will give brainliest

A student is studying the effect of temperature on the action of a protein digesting enzyme that is contained in stomach fluid. identify the independent variabl

The chess club has 16 members and gains a new member every month. the film club has 4 members and gains 4 new members every month. write and solve a system of e

Brad paid for a book that cost $13.40 with a $20 bill what is the least combination of coins and bills that can be used to make his change? what are two other d

Which barbarian tribe conquered Greece? a. Burgundians b. Franks c. Lombards d. Visigoths

In paragraph 5, the word intricately means

Why does evolution have to with change over time?