Questions on Algebra: Proportions answered by real tutors!

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Question 191458: Find the product
(2x+1)(x-1)
Click here to see answer by Mathtut(3670)

Question 191680: Three individuals form a partnership and agree to divide the profits equally. X invests $9,000, Y invests $7,000, Z invests $4,000. If the profits are $4,800, how much less does X receive compared to having the profits divided in proportion to the amounts invested by X,Y, and Z?
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Question 191457: reduce to the lowest term and without negative exponents
4m^9/22m^5
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Question 191456: reduce to lowest term and answer with negative exponents
12-2*^2
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Question 125576: eleanor can complete two skirts in 15 days. how long will it take her to complete eight skirts
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Question 191968: write 0.8% as a completely reduced fraction.
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Question 191967: write 0.8% as a completely reduced fraction.
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Question 191972: find the percent equivalent to the ratio 12 to 25
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Question 191970: write the reduced fraction and decimal form of 8.55%
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Question 191976: write the following percent as a fraction or mixed number 484%
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Question 191979: write the decimal and percent form of the fraction 4/5 (its a fraction)

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Question 191979: write the decimal and percent form of the fraction 4/5 (its a fraction)

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Question 191978: henry loaned his uncle $680.00 at 17% for 195 days. How much simple interest did he earn consider 360 days for a year
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Question 191980: write the reduced fraction and percent form of 5.55
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Question 192131: For the following problem, you need to give a proportion whose solution gives the answer to the problem. You must name the variable that you used in the proportion.
A new virus is released on the internet; the administrator of a department's Local Area Network (LAN) is given five minutes by a manager to estimate the impact. The administrator samples 12 of the PCs connected to the LAN and finds that 7 are infected. Use a proportion to estimate the number of infected PCs if there are a total of 216 PCs connected to the LAN. Thanks!
Click here to see answer by stanbon(75887)

Question 192145: I need to give a proportion whose solution gives the answer to the problem. You must name the variable that you used in the proportion. Please show work.
Thank You
A psychologist bills her patient $300 an hour, her care requires 17 hours
to complete. How much will the patient owe the psychologist? excluding tax.
Click here to see answer by Mathtut(3670)

Question 192130: For the following problem you need to give a proportion whose solution gives the answer to the problem. You must name the variable that you used in the proportion.
A lawyer bills her clients $300 per hour of service. If a client's case requires 17 hours to complete, use a proportion to calculate how much the client will owe the lawyer (excluding tax)
Thank You to all!
Click here to see answer by RAY100(1637)

Question 192128: For a certain time period the ratio of the dollar value of exports to the dollar value of imports for the United States was 2 to 3. If the value of exports during that time period was 48 billion dollars, then what was the value of imports?
Click here to see answer by edjones(8007)

Question 192406: Jan types at an average rate of 12 pages per hour. At that rate, how long wil it take jan to type 100 pages?
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Question 192820: the amount of material needed to cover a ball is directly proportional to the square of its diameter. a ball with a diameter of 12 cm needs 452 cm(squared) of materail to cover it. if 1017 cm(squared) of material is to be used what is the diameter of the ball.
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Question 192874: A model airplane is to be an exact replica of the original, but at 1/50 the size. If the actual length of the airplane is 230 feet, how many feet long should the model be?
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Question 193439: 1/4=5kilometers while 2 inches= what?
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Question 193451: Respected sir,
[1] Rs.1980 are divided among A,B,C so that half of A's part ,one-third of B's part and one-sixth of C's part are equal.Then , B's part is ?

plz help me to solve ratio ,proportions maths problem.waiitng for yur reply.
thank u sir.
regards.
Binita
Click here to see answer by RAY100(1637)

Question 193450: Respected sir,
[1] 94 is divided in to two parts in such a way that the fifth part of the first and the eighth part of the second are in the ratio 3:4,the first part is ?
[2] Rs.1980 are divided among A,B,C so that half of A's part ,one-third of B's part and one-sixth of C's part are equal.Then , B's part is ?
plz solve my ratio ,proportion difficualty .waiting for yur reply.
thank you sir.
Regards.
Binita.
Click here to see answer by solver91311(24713)

Question 193700: a+1
____= 1 + a-2
____
a 2a
Click here to see answer by jim_thompson5910(35256)

Question 195039: Suppose y is directly proportional to x
(a) If y=8 when x= 13, find k so that y=kx.
(b) Then use y=kx to find y when x=3
Click here to see answer by RAY100(1637)

Question 195247: Employees of a discount appliance store receive an additional 20% off of the lowest price on an item. If an employee purchases a dishwasher during a 15% off sale, how much will he pay if the dishwasher originally cost $450?

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Question 195789: x/0.5=3.4/2 solve the proportion
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Question 196164: Please help solve: six-thirteenths of audiophiles could discriminate between 2 products. If 28 could not discriminate, how many could discriminate?
Click here to see answer by edjones(8007)

Question 196780: find the quotient.
2/5 divided by 6/19
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Question 196879: Write " 682 miles in 4 days" as a unit rate.
Click here to see answer by Earlsdon(6294)

Question 196886: The length of a retangle is five less than twice the width. The perimeter is 50 cm. Using an equation,find the dememsions of the rectangle.
Click here to see answer by anantha(86)

Question 196877: 63gallons/10 gallons= n gallons/16 hours.solve for n.round to the nearest tenth.
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Question 196973: The distance traveled at a constant speed is directly proportional to the time of travel. If Olivia traveled 112 miles in 3.5 hours, how many miles will Olivia travel in 8.9 hours at the same constant speed?
Click here to see answer by stanbon(75887)

Question 197183: Shad is 3 ft. from a lamppost that is 12 ft. high. If Shad is 5 1/2 ft. tall, How long is Shad's shadow?
Click here to see answer by RAY100(1637)

Question 197425: solve the proportion
5/ x-1= 7/x
Click here to see answer by checkley77(12844)

Question 197499: Cone A is similar to cone B with a scale factor of 1/9. If cone A, the smaller of the two, has a volume of 10 cm3, what is the volume of cone B?
Click here to see answer by vleith(2983)

Question 197598: Respected sir & madum,
1] find the ratio of x:y:z,from the following equation :
x-2y+z=0 .....(1)
3x+2y-3z=0....(2)
2]solve the following simultaneous equatins by cross multiplication method
5x-3y=1 ..... (1)
x+2y=12......(2)
plz solve my difficulty as soon an possible...need simple explaination.
regards.
Binita.

Click here to see answer by stanbon(75887)

Question 197916: Hello!
I need help in proportions. i don't understand it at all. i Basicly need hep in probability im not good at outcome(events). Please teach me how.
THANK-YOU VERY MUCH (TYVM)
Sincerely,
George
Click here to see answer by Ratman99(5)

Question 198121: Lance wanted to see how long it would take to ride 100 miles. After 2 hours of riding, he had only gone 30 miles. He increased his speed by 5 mi/h and maintained that pace for the rest of the trip. How long did it take Lance to ride 100 miles?
What I've done so far: I took the 30 miles divided it by 2 hours; got that he's traveling at 15 mi/h. I then took the 15 mi/h and added 5 mi/h; to get 20 mi/h that he'll travel for the rest of the trip. Then here's where I get confused, I used the formula time = distance over time. which would be time = 70 mi. left over 20 mi/h. I came up with 3.5 hours to ride the remaining 70 miles. I then would add 2 hours with the 3.5 hours to get 5.5 hours. It would take Lance 5.5 hours to ride 100 miles. Is this correct?
Click here to see answer by vleith(2983)

Question 198126: The turtle and the hare have a race that is 1 mile long. The turtle plods along steadily so that he will finish in 3 hours. The hare take a nap at the starting line for 2.8 hours, wakes up, and hops hurriedly to catch the turtle. How fast will the hare have to hop, to tie the race? This is what I've got so far:
I took the 3 hours that it will take the turtle and subtracted the 2.8 hours that the hare was sleeping, I came up with .2 hours that the hare has left to tie the race. I then used the formula speed = distance over time; which gave me 1 mile over .2 hours which would equal 5 mi/h. The hare would have to travel 5 mi/h to tie the turtle.
Click here to see answer by Earlsdon(6294)

Question 198136: Miguel walks 3 kilometers to school in 40 minutes. On Saturday he plans to walk to a friend's house which is 1 kilometer past school. How long will it take him to walk to his friend's house? This is what I have:
I took 40 minutes divided it by 3 kilometers to find that it's taking him 13.3 min. to walk one kilometer. I then multiplied that by the 4 total kilometers he would walk to his friend's house and I came up with 53.3 min. So it would take Miguel 53 min. to walk to his friend's house, is this correct?
Click here to see answer by arallie(162)

Question 198129: It took Keiko 15 minutes to walk 1 mile to the store. Then she walked 2 more miles from the store to the beach it took her 45 minutes. What was her average speed in miles per hour? This is what I did:
I added the 15 min. and 45 min. and got that she walked 3 miles in 1 hour.
You would then use the formula for speed. Speed = 3 miles over 1 hour.
Keiko average speed was 3 mi/h.
Click here to see answer by arallie(162)

Question 198123: A long distance runner completes the first half of a 26 mile marathon in 2 hours. How fast will she have to run the rest of the race in order to finish in 5 hours total? Ok this is what I have done so far:
I took the 26 miles divided it in half to find that she traveled 13 miles in 2 hours. I then used the formula speed = distance over time. She has to run 13 miles left to run divided by the 3 hours she has left. I came up with 4.3 mi/h.
Click here to see answer by arallie(162)

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