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Question 293357: at a nut house, a pound of cashews sell for $6.00 per pound and a pound of peanuts sells for $3.00 per pound.If you would like a four pound mixture of peanuts and cashews at a cost of $4.75 per pound,how many pounds of cashews and peanuts must you choose?
Click here to see answer by ankor@dixie-net.com(22740)

Question 293653: assume that the salaries of elementary teachers are nomally distributed with a mean of $36,000 and a standard deviation of $6000. what is the cutoff salary for teachers in the bottom 10%?
Click here to see answer by stanbon(75887)

Question 293657: a shipping company charges $40.00 for a 10 lb package. Another company charges $22.85 for a 3 lb package. Write a formula to show the cost for shipping per company and the cost per pound.

Click here to see answer by stanbon(75887)

Question 293595: a fuel blend is made from mixing 4 quarts of oil at $2 per quart with 3 gallons of gasoline at $1.95 per gallon. What is the cost, to the nearest cent, of a gallon of the fuel mixture?
Click here to see answer by brucewill(101)

Question 293761: flour sells for $1.35/oz and thyme sells for $1.85/oz. how much of each for 20/oz that sells for $1.65/oz
Click here to see answer by richwmiller(17219)

Question 293734: A car radiator contain 8 liters of a 32 percent antifreeze solution, how many liters must be drained and replaced to get a 49 percent antifreeze solution?
Click here to see answer by richwmiller(17219)

Question 293888: The manager of a specialty food store combined almonds that cost $4.50 per pound with walnuts that cost $2.50 per pound. How many pounds of each were used to make a 100 pound mixture that costs $3.24 per pound?
Click here to see answer by richwmiller(17219)

Question 293997: a 30% solution of fertilizeris to be mixed with a 60 % solution of fertilizer in order to get 150 gallons of a 50 % solution. how many gallons of the 30% solution and 60% solution would be mixed
Click here to see answer by richwmiller(17219)

Question 293994: wayne blends coffee for a local shop. he needs to prepare 200 pounds of blended coffee beans selling for $3.95 per pound. he intends to do this by blending togather a high-quality bean costing $4.95 per pound and a cheaper bean costing $2.65 per pound. to the nearest pound find how much high quality coffee bean and how much cheaper coffee bean he should blend
Click here to see answer by richwmiller(17219)

Question 294521: How much water must be added to 42 liters of a liquid fertilizer that is 0.8% nitrogen to get a mixture that is 0.3% nitrogen?
Click here to see answer by nyc_function(2741)

Question 294681: Hello Can someone please help me, I did try to answer the question without asking for help but now I just got confused. I posted the question and the answer I have so far but I am stuck, I am not good with truth tables.
Determine which, if any, of the three statements are equivalent. Give a reason for your conclusion.

I) If the dog licks her nose, then the dog is not happy.
II) If the dog licks her nose, then the dog is happy.
III) If the dog is not happy, then the dog does not lick her nose
HERE is what I have so far:
For example, translate "If the dog licks her nose, then the dog is not happy. " into p -> ~q and set up the following table
p q ~q p -> ~q
T T F F
T F T T
F T F T
F F F T
I want to say that the answer will be ANSWER: C II AND III but I do not know how to get to the second and third truth statement.
Can you please help me.
Thank you so much

Click here to see answer by richwmiller(17219)

Question 294680: Hello,
Can someone please help me with this problem. I think the answer is its a fallacy by deductive reasoning but I am not sure.

If the argument below is valid, name which of the four valid forms of argument is represented. If it is not valid, name the fallacy that is represented.

If Sally is on vacation, then Tom is at work.
If Tom is at work, then the line at the post office is long.
Therefore, if Sally is on vacation, then the line at the post office is long.

Thank you. You guys are great for helping people like me.

Click here to see answer by richwmiller(17219)

Question 294557: Suppose $1000 dollars is invested at an interest rate r. compounded continuously. If the balance grows to $1144.54 in 3 years. Find the time it will take for the balamce to grow to $2500.
Click here to see answer by nerdybill(7384)

Question 295111: A 25% saltwater solution is mixed with 45% saltwater solution to make 25 liters of 37% solution. How many liters of each solution were mixed.
Click here to see answer by richwmiller(17219)

Question 295139: Achemist has 600ml of a solution that is half acid. She needs a solution that is 70% acid. How many mL of acid she should add?
Click here to see answer by ankor@dixie-net.com(22740)

Question 295319: A metallurgist has one alloy containing 40% aluminum and another contained 57% aluminum. How many pounds of each alloy must he use to make 54 pounds containing 51% aluminum.
Click here to see answer by Fombitz(32388)

Question 295216: You are making 10 tons of concrete that is 61.1% cement by mixing a 19% cement mixture with a 90% cement mixture.
a) how much of the 90% cement mixture must you use ? answer in units of tons.
b) how much of hte 19% cement mixture must you use ? answer in units of tons.
Thank you in advance for your help !
Click here to see answer by ankor@dixie-net.com(22740)

Question 295595: I cannot do this im stuck...
Cashews sell for $8 a pound,and peanuts for $3 a pound. A store wants to make 20 pounds of mixed nuts which they will sell for $6 a pound. How many pounds of cashews and how many pounds of peanuts should they use?
Click here to see answer by mananth(16946)

Question 295596: How many ounces of pure alcohol must be added to 40 ounces of a 70% alcohol solution to produce an 85% alcohol solution?
Click here to see answer by mananth(16946)

Question 295596: How many ounces of pure alcohol must be added to 40 ounces of a 70% alcohol solution to produce an 85% alcohol solution?
Click here to see answer by nerdybill(7384)

Question 295593: I cant figure this out? HELP thanks
A dairy has 50 gallons of milk that is 7.8% butterfat. How many gallon of milk that is 2.2% butterfat should be added to the 50 gallons to make a milk that is 4.2% butterfat?
Click here to see answer by richwmiller(17219)

Question 295592: I NEED HELP!!!
A premium grade coffee sells for $11 a pound. A standard grade coffee sells for $5 a pound. You decide to make an 18 pound mixture of the premium grade and standard grade and sell it for $6 a pound. How many pounds of premium grade would you use? How many pounds of standard grade would you use?
Click here to see answer by richwmiller(17219)

Question 295616: Chris bought 12 items for a total cost of $6.00. The 12 items consisted of cookies and candy bars. The cookies cost 60 cent each and the candy bars cost 45 cents each. How many cookies did he buy?
Click here to see answer by richwmiller(17219)

Question 295586: A tank holds 2940 gallons. You want to fill it with a 20% NaOH (caustic) solution. You have 25% NaOH solution available. How many gallons of water must be mixed with how many gallons of 25% NaOH solution to fill your tank with 2940 gallons of 20% NaOH solution? (1 gallon of water weighs 8.34lbs and 1 gallon of 25% NaOH weighs 10.66 lbs)
Thanks for any help on this problem. I know simple solutions but got really confused with the different weights per gallon.
Click here to see answer by richwmiller(17219)

Question 295833: A 2% solution of sulfuric acid was mixed with a 12% solution of sulfuric acid to produce an 8% solution. Determine how much 2% solution and how much 12% solution were used to produce 10 gallons of 8% solution. Enter the amount of 2% solution in the answer box below.
Click here to see answer by richwmiller(17219)

Question 295824: A chemist has one solution which is 20% saline and a second solution which is 65% saline. How many gallons of each solution should be mixed together to get 120 gallons of a solution which is 50% saline?
Click here to see answer by richwmiller(17219)

Question 295823: Any help would be appreciated.

John is making a Starbuck�s � run for his exhausted co workers. He is going to buy a combination of Lattes and Cappuccinos. The Lattes cost $4 each and the Cappuccinos cost $3 each. If he needs 30 drinks total and has $100 to spend, how many of each should he buy?
Eric
Click here to see answer by richwmiller(17219)

Question 295911: 2. How many pounds of cream containing 12% butterfat must be added to 1800 lbs. of milk containing 2% butterfat to obtain milk having 3% butterfat?

Click here to see answer by mananth(16946)

Question 295939: A chemist has 600 milliliters of a solution that is half acid. She needs a solution that is 70% acid. How many milliliters of acid she should add?
Click here to see answer by nerdybill(7384)

Question 295940: Ting can mow a lawn in 4 hours. Her boss, Renald, can mow the lawn in 3 hours. How long will il take them to mow the lawn if they work together?
Click here to see answer by nerdybill(7384)

Question 295938: A bullet train travels 30 miles per hour faster than a passenger train, and it takes the bullet train 3 hours less time to travel 400 miles. How long does it takes the passenger train to make the trip?
Click here to see answer by mananth(16946)

Question 295910: 1. A chemical engineer mixed 40ml of 8% hydrochloric acid with 60ml of 12% hydrochloric acid solution. He used a portion of this solution and replaced it with distilled water. If the new solution tested 5.2% hydrochloric acid, how much of the original mixture did he use.

Click here to see answer by nerdybill(7384)

Question 295954: A recipe for making 10 loaves of bread requires 24 cups of flour and 4 table spoons of baking powder . if the proportion in this recipe are to be used to make 3 loaves of bread , how many cups of flour will be needed ?
Click here to see answer by richwmiller(17219)

Question 296016: Soybean meal is 12% protein; cornmeal is 6% protein. How many pounds of each should be mixed together in order to get 240-lb mixture that is 11% protein?
Click here to see answer by checkley77(12844)

Question 296079: how much of an 80% nitric acid solution must be added to a 125gram solution of 10% nitric acid to produce a 50% nitric acid solution?
Click here to see answer by stanbon(75887)

Question 296083: how much of an 80% nitric acid solution must be added to a 125gram solution of 10% nitric acid to produce a 50% nitric acid solution?
Click here to see answer by richwmiller(17219)

Question 296519: a pharmacist wishes to prepare 36mL of 20% alcohol solution. she has 30% solution and 10% solution. how much of each should be used in forming the desired mixture?
Click here to see answer by richwmiller(17219)

Question 296797: How many gallons of 60% anti freeze and how many gallons of 40% anti freeze should be mixed to obtain 100 gallons of a 52% mixture of anti freeze?

Click here to see answer by richwmiller(17219)

Question 296788: A 1-quart bottle full of liquid is 10% alcohol and a 3-quart bottle full of liquid is 30% alcohol.If the two bottles are combined,what is the percentage of alcohol in the mixture?
Click here to see answer by ankor@dixie-net.com(22740)

Question 297443: the number is equal to both the sum and the product of the same three numbers
Click here to see answer by Alan3354(69443)

Question 297661: Solve each word problem by setting up and solving an approprite system of equations.
Suppose that you one solution contains 50% alcohol and another solution contains 80% alcohol. How many liters of each solution should be mixed to make 10.5 liters of a 70% alcohol solution?
Click here to see answer by richwmiller(17219)

Question 297963: 5 fl. oz. of a 2% alcohol solution was mixed with 11 fl. oz. of a 66% alcohol solution. Find the concentration of the new mixture?
Click here to see answer by Deina(147)

Question 298047: how many grams of gold alloy that costs $4 per gram must be mixed with 30 grams of a gold alloy that costs $7 per gram to make an alloy that costs $5 per gram?
Click here to see answer by nyc_function(2741)

Question 298146: a pharmacist mixed some 10% saline solution with some 15% saline solution to obtain 100mL of a 12% saline solution. How much of the 10% saline solution did the pharmacist use in the mixture
Click here to see answer by Deina(147)

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