Question 351773: 1.)how many grams of pure silver must a silversmith mix with a 40% alloy(a mixture that is 40% silver) to produce 680 grams of a 50% alloy?
2.)A machinist is producing a circular cylinder on a lathe.The circumference of the cylinder must be 12 inches, with a tolerance of 0.2 inch. What maximum and minimum radii (to the nearest 0.01 inch)must the machinist stay between to produce an acceptable cylinder?
3.)The loudness, measured in decibels, of a stereo speaker is inversely proportional to the square of the distance of the listener from the speaker. If the loudness is 32 decibels at a distanceof 22 feet, what is the loudness (to the nearest decibel) when the listener is 8 feet from the speaker.
4.)You can rent a car from company A for $32 a day plus $0.09 amile. Company B charges $26 a day plus $0.22 amile.How many miles(to the nearest mile) can be driven per day if using Company B to yield the least rental charge?
5.) It costs a restaurant owner 9 cents per glass for soda, which is sold for 99 cents per glass.How many glasses of soda must the restaurant owner sell to make a profit of $4050?
Answer by solver91311(24713)   (Show Source):
You can put this solution on YOUR website!
Let's work on your number one problem first. One of the most important lessons to be learned in all of your educational experience, not just in the mathematics discipline, is the ability to read, comprehend, and follow written instructions.
Go back to the page where you submitted this set of 5 questions, and re-read the part of the instructions that says: "One question per post."
John
My calculator said it, I believe it, that settles it
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