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Question 42851: The volume V of a given mass of a gas varies kirectly as the temperature T and inversely as the pressure P. If V=231cm^3 when T=42degrees and P=20 kg/cm^2, what is the volume when T=30degrees and P=15kg/cm^2?
Click here to see answer by fractalier(1804)

Question 43151: TWO DIFFERENT SOLUTIONS OF ALCOHOL WITH RESPECTIVE PROPORTIONS OF WATER TO ALCOHOL OF 3:1 AND 3:2 WERE COMBINED .WHAT IS THE CONCENTRATION OF ALCOHOLIN THE NEW SOLUTION SOLUTION IF THE ORIGINAL SOLUTIONS WERE MIXED IN EQUAL AMOUNT
PLZ Help me with this one
best regards
mandy
Click here to see answer by checkley71(8405)

Question 44269: Travis Hayes needs 10% hydrochloric acid for a chemistry experiment. How much 5% acid should be mixed with 60 mL of 20% acid to get a 10% solution?
acrown1@umbc.edu
Click here to see answer by mbarugel(146)

Question 44394: how many liters of a 90% acid solution must be added to 6 liters of a 15% acid solution to obtain a 40% acid solution ?

Click here to see answer by adamchapman(301)

Question 44781: Solve each problem. Use your choice of methods.
How many liters (L) of a 10% silver iodide solution must be mixed with 7 L of a 4% silver iodide solution to get a 6% solution?

Click here to see answer by josmiceli(3003)

Question 44886: How many liters (L) of a 10% silver iodide solution must be mixed with 7 L of a 4% silver iodide solution to get a 6% solution?
Click here to see answer by stanbon(26252)

Question 44886: How many liters (L) of a 10% silver iodide solution must be mixed with 7 L of a 4% silver iodide solution to get a 6% solution?
Click here to see answer by AnlytcPhil(958)

Question 45317This question is from textbook Intermediate Algebra

: How many pounds of candy worth $0.50 per pound and how many pounds of peanuts worth $0.90 per pound must be mixed to get a mixture of 64 pounds worth $0.60 per pound? I need to write the equation and solve it.
Gracias.
Lydia Alejandro.This question is from textbook Intermediate Algebra

Click here to see answer by tutmath(14)

Question 45662: Hi again,
I need some assistance with this mixture problem:
It takes a pipe 10 minutes less than another one to fill a tank of water. Both pipes together can fill the tank in 12 minutes. How long will it take each one to fill the tank separately?
I am having trouble on how to start setting the equation up.
Thanks again,
Lou
Click here to see answer by Fermat(127)

Question 45784: I have a word problem that goes like this:
If I have a dart game and only 4 points or 9 points can be scored on each dart. What is the largest score that is NOT possible to obtain? I have an unlimited number of darts.
HELP, please
Click here to see answer by AnlytcPhil(958)

Question 46604: what is the volume of a cylinder that has a radius of 6 cm and a height of 28 cm?
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Question 46602: FACTOR: x^2-2x-35
Click here to see answer by adamchapman(301)

Question 46600: Valerie has a bag of marbles that contains 8 red,4 green, 3 orange,5 blue, and 4 purple marbles. If she pulls out 2 marbles at random, one at a time without replacing the chosen marbles,then what is the probability that both are purple?
Click here to see answer by Nate(3495)

Question 46605: Auto-Check Motors charged Mrs. Jones $87.00 for an automotive part plus $67.00 per hour that a mechanic worked to install the part. The total charge was $415.00. For about how long did the mechanic work to install the part Mrs.Jones's car?
Click here to see answer by Nate(3495)

Question 46824: REPOST: Oil and gas. An outboard motor calls for a fuel mixture that has a gas-to-oil ratio of 50 to 1. How many pints of oil should be added to 6 gallons of gasoline?
Click here to see answer by stanbon(26252)

Question 46987: ok this is it,how many pounds of seed worth 60 cents must be mixed with 300 pounds of seed worth 35 cents a pound to make a mixture worth 50 cents per pound ? my i think its 237.but that just doesnt seem right. thank you
Click here to see answer by Nate(3495)

Question 47265: MULTIPLY;(x+2)(x-4)
Click here to see answer by checkley71(8405)

Question 47267: what are the solutions to 2x^2-7x=15?
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Question 47268: Multiply;(6h+5)(6h-5)
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Question 47269: Factor;x^2-4x-5=o
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Question 47279: Find f(2) given f(x)=-3x+4.
Click here to see answer by adamchapman(301)

Question 47278: Write 50,800 in scientific notation.
Click here to see answer by checkley71(8405)

Question 47274: Solve;4x-3y=10
x+3y=-5
Click here to see answer by Jaime(3)

Question 47437This question is from textbook

: A certain of beer is 5% alcohol and another type of beer is 2% alcohol. How much of each type should be mixed to get 100L of beer which is 3.2% alcohol?This question is from textbook

Click here to see answer by checkley71(8405)

Question 47434This question is from textbook

: A certain beer is 5% alcohol and another type of beer is 2% alcohol.How much of each type should be mixed to get 100L of beer which is 3.2% of alcohol?This question is from textbook

Click here to see answer by Paul(988)

Question 47508: Hydrochloric acid and distilled water were mixed to produce 210mL of solution. If 120mL more H2O was used than HCI, how many mL of each were mixed?
tnx!.. pls answer as soon as possible!..
tnx!
Click here to see answer by venugopalramana(3286)

Question 47644: 5. Dr. Wong orders 20 grams of a 52% solution of a certain medicine. However, the
pharmacist only has bottles of 40% and 70% solution. How much of each should the
pharmacist mix to Mr. Wong's satisfaction?
Click here to see answer by venugopalramana(3286)

Question 48141: If I buy a square lot that is 110 yards on all four sides, what is the size in acres?

I bought a pound of nails. If each nail weighs 0.025 ounces how many nails are there total?
Click here to see answer by stanbon(26252)

Question 48178: Half of the perimeter of a rectangle is 51 cm. If the difference between the length ang the width is 13 cm, find the area of the rectangle.

Click here to see answer by AnlytcPhil(958)

Question 48222This question is from textbook College Algebra

: A biologist has two brine solutions, one containing 5% salt and another containing 20% salt. How many milliliters of each solution should he mix to obtain 1 L of a solution that contains 14% salt?
Thank you so much for all your help!!This question is from textbook College Algebra

Click here to see answer by stanbon(26252)

Question 48237This question is from textbook College Algebra

: A customer in a coffee shop purchases a blend of two coffees: Kenyan, costing $3.50 a pound, and Sri Lankan, costing $5.60 a pound. he buys 3 lb of the blend, which costs him $11.55. How many pounds of each kind went into the mixture?
Thank you for helping me!This question is from textbook College Algebra

Click here to see answer by tutorcecilia(2042)

Question 48573: Solution x is 2% alcohol and solution y is 6% alcohol. A drugstore owner wants to mix them in order to get a 60 liter of solution that is 3.2% alcohol. How many liters of each should the owner use?
My dear tutor i would be very glad if you can help me solved this problem. I had been trying my very best but really iam poor in math. THANKS so much and more power........
Click here to see answer by longjonsilver(2297)

Question 48608: An investor with $10,000 wishes to invest part of it at 11% simple interest and the rest at 12% simple interest. How much should she invest at 11% if she is to receive a total of $1115 in interest from boht investments that year?
Thanks!
Click here to see answer by checkley71(8405)

Question 48654: A chemist has a 90% solution of sulfuric acid and a 70% solution of the same acid. How many gallons of each must be mixed in order to make 200 gallons of a 75% solution
Thank you!
Click here to see answer by stanbon(26252)

Question 48655: A coin collector has $45 in quarters and dimes. How many coins of each kind does he hae if the total number of his coins is 240?
Thank you for all your help!
Click here to see answer by stanbon(26252)

Question 48662: ben is developing film in his darkroom when he realized he does not have the proper developer. he needs a mixture that is 20% developer, but he only has a mixture that is 80% developer. how much pure water must be mixed with 9 pints of 80% developer to produce the mixture he needs. the answer is 27 but how do i write the equation.
Click here to see answer by stanbon(26252)

Question 48663: nat wants to combine two types of nuts to make a mixture that costs $1.64 per pound. how many pounds of nuts that cost $1.40 per pound should be mixed with 3 pounds of nuts that cost $2.20 per pound to obtain the desired mixture.

i tried 1.40x + 3(2.20) = $1.64 but this doesn't work. the answer is 7 pounds but i don't understand how to get the formula.
Click here to see answer by checkley71(8405)

Question 48645This question is from textbook
: regular yogurt that is 3% is blended with nonfat yogurt to obtain low fat yogurt that is 1% fat. How many pounds of non-fat and how many pounds of regular yougurt is mixed to obtain 60 pounds of low fat yogurt? This question is from textbook

Click here to see answer by stanbon(26252)

Question 49309: How many pounds of hamburger that cost $1.10 per pound must be mixed with 50 pounds of hamburger that cost $1.80 per pound to make a mixture that cost $1.30 per pound
Click here to see answer by Nate(3495)

Question 49318: A cyclist traveled at a rate of 24 mph to visit a nearby town. The cyclist averaged 18 mph on the return trip. if the round trip took 4.9 hours, find the distance to the nearby town.
Click here to see answer by rebalchick13(1)

Question 49319: quantity three less than twice the sum of the a number and 5
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Question 49319: quantity three less than twice the sum of the a number and 5
Click here to see answer by tutorcecilia(2042)

Question 49548: Dearest tutors, can you help me regarding my problem? thank you for that..
4. A 30-kilogram bag of cement mix contains 25% and 75% sand. How much pure cement must be added to produce a cement mix that is 40% cement?
Click here to see answer by stanbon(26252)

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