How many grams of silver should he add

Assignment Help Mathematics
Reference no: EM13187260

Joe has a ring weighing 20 grams made of an alloy of 20 % silver and the rest gold. He decides to melt down the rings and add enough silver to reduce the gold content to 73 %. How many grams of silver should he add?

Reference no: EM13187260

Questions Cloud

Write a polynomial function least degree : write a polynomial function least degree that has rational coefficients, a leading coefficient of 1, and the zeros 2i, 1 and -2.
Find out the net work produced and the efficiency : The pressures ranges between 0.2 bar and 60 bar. Determine the net work produced and the efficiency of the cycle?
Identify areas of environmental concerns and risks : You are a squad leader in Sapper platoon, Special Troop Battalion, 3rd Brigade, 10th Mountain Division. Your unit will deploy to Afghanistan to conduct operations in support of Operation Enduring Freedom
Write a memorandum to sam jones : Write a memorandum to Sam Jones (CIO) and present your research findings. Your memorandum should be no longer than 500 words.
How many grams of silver should he add : Joe has a ring weighing 20 grams made of an alloy of 20 % silver and the rest gold. He decides to melt down the rings and add enough silver to reduce the gold content to 73 %. How many grams of silver should he add?
What is this maximum flux : Among all rectangular solids defined by the inequalities 0 ≤ x ≤ a, 0 ≤ y ≤ b, 0 ≤ z ≤ 1, find the one for which the outward flux of F = (-x2 - 4xy)i - 6yzj + 12zk outward through the six sides is greatest. What is this maximum flux?
Define electron from a photosensitive surface : A certain minimum energy(E min) is required to eject an electron from a photosensitive surface. Any energy obsorbed beyond this minimum gives kinetic energy to the ejected electron.
Write an equasion for the rate of the canoe downstream : A family is canoeing downstream (with current). Their speed relative to the banks of the river averages 2.75 mi/h. During the return trip, they paddle upstream (against the current), averaging 1.5 mi/h relative to the riverbank.
Would this influence his attitude towards work and leisure : It is generally accepted that a fall in the price of a particular brand of a good could lead to less of it being demanded. Where the good in question has but two attributes: attribute 1 and attribute 2. Using Lancaster's characteristics theory in ..

Reviews

Write a Review

Mathematics Questions & Answers

  How large a sample size will need to be selected

How large a sample size will need to be selected if we wish to have a 95% confidence interval that is accurate to within 1%.

  Describe the appropriate sampling distribution model

Describe the appropriate sampling distribution model - shape,center and spread - with attention to assumptions and conditions. Make a sketch using the 68-95-99.7 Rule.

  Use the mathematical and graphical analyses

Use the mathematical and graphical analyses to determine the equation of the above function if the parabola cross the line y=2x at two points with the x-coordinates 0 and 10. Hint: there is more than one solution.

  What is the temperature of the coffee after 16 minutes

A cup of coffee at 181 degrees is poured into a mug and left in a room at 66 degrees. After 6 minutes, the coffee is 139 degrees. Assume that the differential equation describing Newton's Law of Cooling is (in this case) dT/dt=k(T-66).

  Find a function that models the area of the window

find a function that models the area of the window.

  Find the speeds of the two cars

Write a system of equations for the problem, and then solve the system. Two cars leave a city and head in the same direction. After 4 hours, the faster car is 24 miles ahead of the slower car. The slower car has traveled 164 miles. Find the speeds..

  Determine how many tickets should be sold for a flight

Determine how many tickets should be sold for a flight on an airplane which has 400 seats, such that with probability 0.95 everybody who appears for the departure of theflight will have a seat. what assumption are you making.

  How much money would you have after 7 days

suppose a leprechaun gives you a magic penny that doubles every night. How much money would you have after 7 days?

  Area enclosed between curves

Find the area, in square units, of the region determined by the intersections of y = x^1/2 and y = x^2/8.

  Mobius transformations for circles

For any given circles R and R' in C_oo, there is a mobius transformation T such that T(r)=R'. Further, we can specify that T take any 3 points on R onto any 3 points of R'. If we do specify Tz_j for j=2,3,4 (distinct z_j in R), then T is unique.

  Drawing cards and sampling without replacement

Probability : Drawing Cards and Sampling Without Replacement, 3 cards are drawn in succession from a regular straight deck of 52 playing cards. Find the probability that

  Question regarding linear function

The monthly cost of driving a car depends on the number of miles driven. Lynn found that in May it cost her $380 to drive 480 mi and in June it cost her $460 to drive 800 mi.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd