Questions on Algebra: Proportions answered by real tutors!

Tutors Answer Your Questions about Proportions (FREE)

Question 253109: I forget the formula that applies to this problem (3a-1)^2 Do I multiple 3*2=9would I write the problem as 9a^2 +1?
Click here to see answer by palanisamy(496)

Question 253109: I forget the formula that applies to this problem (3a-1)^2 Do I multiple 3*2=9would I write the problem as 9a^2 +1?
Click here to see answer by jim_thompson5910(35256)

Question 253717: how much pure water must be mixed
with 2 liters 40% solution of antifreeze to get a 25% antifreeze mixture?
Click here to see answer by richwmiller(17219)

Question 253775: The ratio of an angle to its complement is 2/3. Find the angle and its complement.
Click here to see answer by palanisamy(496)

Question 253849: Harold wants to cover the floors of his home with carpeting. He has 1,728
square feet of floor to cover.
Part A
Write a proportion to find n, the number of square yards of carpet he needs to
buy.
Proportion____________________________
Part B
Solve your proportion to find how many square yards of carpeting Harold needs to buy.
This is what I was thinking, but I need help:
___n____ = _________
1728 100
but I'm confused because the 1,728 is square feet, and the proportion mentions square yards. Is the missing number 3 because there are 3 feet in each yard? That is my thinking.
i don't know if my proportion is set up right.
Click here to see answer by Alan3354(69443)

Question 253923: Here's the question
It costs $350 for a case of 150 jars of modeling clay. It costs $672 for a case of 450 jars of modeling clay.

What is the unit price for a jar in the case of 150 jars?

What is the unit price for a jar in the case of 450 jars?
Which case of jars of modeling clay is the better buy?
Please help me set up the proportion and answer.
Click here to see answer by richwmiller(17219)

Question 253911: Duriing her trip to Europe, Mary learned that 1 euro was equivalent to the
value of 1.28 U.S. dollars.
Part A. Mary began her trip with $2000 U.S. dollars.How many euros did she
have?
Show your work
2,000 divided by 1.28 = 1562
Answer 1562 euros
Is this correct?
Part B
After her trip, Mary had 740 euros left. What was the value in U.S. dollars?
show your work
740 X 1.28 - $947.20
Are my two answers correct?
Click here to see answer by MRperkins(300)

Question 254017: missing number 2/3w=0
Click here to see answer by edjones(8007)

Question 254087: four over nine equals x over fifteen
Click here to see answer by edjones(8007)

Question 254229: All I need is a little help understanding how to solve a proportion. The problem is . my teacher actually didn't have time to teach us because we had a test today. thank you for help and time!
Click here to see answer by richwmiller(17219)

Question 254353: You are looking at a map to see how much further it is to your destination. The distance on the map is 1.6 inches. If the map has a scale of 1 mile is 1/32 of an inch, how much further do you have to go?
Click here to see answer by ankor@dixie-net.com(22740)

Question 254589: im trying to figure out what to do with the remander...
the problem is
15 5
- -
10 H
i know i must cross multiply and i get 15H and 50 then divide but i get a remander of 5.. i dont know what to do with the remainder
Click here to see answer by richwmiller(17219)

Question 254590: Draw two similar rectangles whoses sides are in ratio of 5.
Click here to see answer by JimboP1977(311)

Question 254590: Draw two similar rectangles whoses sides are in ratio of 5.
Click here to see answer by Jeff Gordon(65)

Question 254590: Draw two similar rectangles whoses sides are in ratio of 5.
Click here to see answer by richwmiller(17219)

Question 255434: How much water should be added to 32 ounces of a 30% solution of alcohol to dilute it to a 16% solution?
Formula to develop the problem
Click here to see answer by ankor@dixie-net.com(22740)

Question 255783: my math problem is not on the list
Click here to see answer by solver91311(24713)

Question 255783: my math problem is not on the list
Click here to see answer by Alan3354(69443)

Question 255894: please cancel this out for me:$2.40 over $3.30.
Click here to see answer by edjones(8007)

Question 256156: How do you solve this problem? Each turnstile can admit 36 people per minute. There are 8 turnstiles at entrance A. How many people can enter the park at this entrance in one minute?
Click here to see answer by richwmiller(17219)

Question 256595: A 4-foot tall girl casts a shadow that is 7.2 feet long. A nearby tree casts a shadow that is 25.56 feet long. How tall, in feet, is the tree?
Click here to see answer by stanbon(75887)

Question 256803: A 15 cm by 20 cm picture is to be enlarged in the ratio 1:1 1/2. What is the area of the enlarged picture?
Click here to see answer by Alan3354(69443)

Question 256890: Please help! I need to know the basic forumla to work out problems such as this:
If it takes 6 men 9 hours to load a lorry, how long does it take 4 men?
Thank you :-)
Click here to see answer by scott8148(6628)

Question 256953: If your number is 2.75 you received $250 if your number is at 3.0 you receive $350. If your number is 2.82, How much do you get?
Click here to see answer by drk(1908)

Question 257128: Im not sure if this is under probabality and statistics but here is my problem.
If there are 2.5 times as many female as there are male. How many males are there if there are 175 people?
Please provide me with a solution. Thanks.
Click here to see answer by edjones(8007)

Question 257219: The Nut House sells walnuts for $4.00 a pound and cashews for $7.00 a pound. How many pounds of cashews should be mixed with 10 pound of walnuts to obtain a mixture that sells for $5.50 a pound?
Click here to see answer by drk(1908)

Question 257458: find the ratio of a and b from the equation 12a^2 + 36b^2 -43ab=0
Click here to see answer by stanbon(75887)

Question 257458: find the ratio of a and b from the equation 12a^2 + 36b^2 -43ab=0
Click here to see answer by Edwin McCravy(20054)

Question 257459: a fraction reduces of 1/4 when two is subtracted from the numerator and three is added to be the denominator. but it reduces to 2/3. if six is added to the numerator and the denominator is multiplied by three. find the fraction.
Click here to see answer by stanbon(75887)

Question 257462: a fraction is such that if the numerator is multiplied by three and the denominator reduced by three we get 18/11, but if the numerator is increased by eight and denominator is doubled we get 2/5. find the fraction.
Click here to see answer by richwmiller(17219)

Question 257461: if 6a^2-ab:2ab-b^2=6:1 find the a:b
Click here to see answer by drk(1908)

Question 257438: Determine the value of n so that the roots of nx^2 � 8x + 10 = 0 are equal.
Click here to see answer by drk(1908)

Question 257478: if y/x-z = y+x/z =x/y then find x:y:z
Click here to see answer by drk(1908)

Question 257485: if a number of two digits is divided by th number obtained after reversing the digits, we get 2.08 , if the sum of the digit is 7, find the number.
Click here to see answer by drk(1908)

Question 257482: the antecedent and consequent of a ratio differ by 40 and is equal to 2/7. find the ratio.
Click here to see answer by drk(1908)

Question 257481: if twice the son's age, in years, is added to the father's age, the sum is 70. but if twice the father's age is added to the son's age the sum is 95. find the ages of the father and the son.
Click here to see answer by stanbon(75887)

Question 257643: If (3x+5y)/(2x-y)=(12x-y)/(5x-3y) then find x:y
Click here to see answer by stanbon(75887)

Question 258197: y=17.6 square root symbol 4+22 inside the sqrootsymbol= 57.2 how did they get that answer? I can't draw out the sq root part.sorry
Click here to see answer by Alan3354(69443)

Question 258283: how to solve proportion?

Click here to see answer by richwmiller(17219)

Question 258409: A 12-foot tree casts a 16-foot shadow. How many feet tall is a nearby tree that casts a 20-foot shadow at the same time
Click here to see answer by rfer(16322)

Question 258481: how do u write 3 equivalent ratios for 2/9
Click here to see answer by stanbon(75887)

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