thy2002nguyen thy2002nguyen

01-12-2014
Mathematics

Answered

Phil has 50 nickels and dimes worth $4.15. How many of each coin does he have?

Answer :

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

Other Questions

Scenario planning is most useful for:O Short-term, tactical decision makingO Situations with a high degree of certaintyO Long-term, strategic planning in uncert

One disadvantage of the matrix-style of organization is that it is more difficult to keep development projects on schedule. The model slows down the time from d

The dependent variable:None of theseA. Often involves using a placebo as a control groupB. Is the same thing as a "major construct"C. Is what gets manipulated i

Confronting an individual with his/hers fears is characteristic of which school of thought?a. Psychodynamicb. Existentialc. Cognitived. Interpersonal

calcium bicarbonate plus calcium oxide --------- calcium carbonate + water

Indique. A Opção que contém a sequência lógica dos níveis de organização dos seres vivos

How can one remove a restriction B from a driver's license in Texas?A. Complete a driver education courseB. Provide medical documentationC. Pass a vision testD.

Using the ICD-10-CM code book, identify the main term for the following diagnosis:Gestational hypertension in the third trimester.A. complicationB. trimesterC.

When 27,871 is added to a certain number, the sum is 97,287. What is the number?

the sum of two nos is 18 ,product of these same nos is 56 what is the no solve in algebraic way\

If a rocky island appeared out of the water from volcanic activity, what type of organism would most likely live there first? Select one: a. Pioneer trees b. Li

Which of the following scenarios is not possible? Select one: a. A plant cell in a hypertonic solution bursts. b. A plant cell in an isotonic solution becomes f

why do you think that the spanish built all the missions along the coast instead of further inland.

y=11(9^x) +3 what is the y-intercept if any?

Use the fact that the speed of light in a vacuum is about 3.00 × 108 m/s to determine how many kilometers a pulse from a laser beam travels in exactly twelvehou

Write an equation in slope-intercept form for each table below. Show how you found the slope and y-intercept. ----------------------------------------- (1): |x

The equation that is used to solve second law problems is # F= ma. ( A) what does of each variables mean? F= --------'-------- M= ------------ a--------------

ide tify the 2 statements below that correctly match the conflict to the correct description. For example, a man struggling to survive on a deserted island is

What is a solution? Are all mixtures solutions? Are all solutions mixtures?

A scientist finds a new life form and determines that it contains no nuclei. Which of the 6 kingdoms could it belong to? Select the list that contains all the p