Tutors Answer Your Questions about Proportions (FREE)
Question 169527: Please help me solve this table with work. I have to translate units into other units. Preferebly in Scientific Notation since that is the focus of the section. The | is a line in the table, the dimensions are 4x4.
AU | Parsec | Light Year
One AU = | 1 | ? | (1.58)*10^-5 |
One Parsec = | ? | 1 | ? |
One Light Year = | ? | 0.307 | 1 |
Click here to see answer by edjones(8007)   |
Question 170096: Ratio and Proportion
2. 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 15 of the PCs connected to the LAN, and finds that 9 are infected; use proportion to estimate the number of infected PCs if there are a total of 202 PCs connected to the LAN.
This problem has me totally confused! Again, I am not good a word problems. I never know where to start, I have been trying to work out the problem, but I don't know where to begin. Please help me!
Click here to see answer by stanbon(75887) |
Question 170097: Ratio and Proportion
1. A lawyer bills her clients $200 per hour of service. If a client's case requires 39 hours to complete, use proportion to calculate how much the client will owe the lawyer (excluding tax).
I am having a really hard time figuring out this word problem. I have always had trouble figuring them out because I never know where to begin. I figured it I multiply 39*200=7,800.00, but I know this is totally wrong. Can you please help me! I have two more word problems to do that are similar to this. Thank you so much for assisting.
Click here to see answer by stanbon(75887) |
Question 170098: Ratio and Proportion
3. An administrator of a popular web site is told that a new server can handle 41,000 "hits" (users accessing the site) per second. The web site currently experiences a peak demand of about 105,000 hits per second; but every month, the peak demand increases by 2800 hits per second. Use a proportion equation to determine how many new servers the administrator should buy to address expected traffic for the next 24 months.
Again, I am stumped on word problems. I had 24 questions and the last three are word problems that totally gets me confused because I don't know where to begin and what information I need to get started. Can someone please help me with this? It would be greatly appreciated!
Click here to see answer by stanbon(75887) |
Question 170761: An environmental scientist wants to estimate the number of carp in a pond. He captures 100 carp, tags all of them, and releases them. A week later he captures 85 carp and records how many have tags. His results are shown in the table. Write and solve a proportion to estimate the number of carp in the pond.
Table...
Status.........Number Captured
Tagged 20
Not tagged 65
Click here to see answer by checkley77(12844) |
Question 158042: A group of students measured several object around their school in both yards and meters.
Yards 7 3.5 7.5 4.25 6.25 11
Meters 6.3 3.2 6.8 3.8 5.6 9.9
Use theri data, shown in the table to find a conversion factor between yards and meters
Click here to see answer by Alan3354(69443)  |
Question 170881: A particular shade of paint is made by mixing 5 parts red paint with 7 parts blue paint. To make this shade, Shannon mixed 12 quarts of blue paint with 8 quarts of red paint. DId Shannon mix the correct shade? explain.
all i got was...
R/B=5/7
Click here to see answer by Mathtut(3670) |
Question 171330: [Question]
Length of flag = 10 feet; width of flag =
TABLE
width of flag = 1
length of flag = 1 9/10
I understand basic ratio/proportions however, finding the proprotional
width of the flag doesn't compute.
[Thoughts]
I'm helping my son with his homework without much luck!
Click here to see answer by solver91311(24713)  |
Question 171905: Hello, to anyone that can help, this is a story problem and the bane of my existance. I will be appreciative to anyone who can help. Here it is:
To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled.First we are asked to a write an equation using only one variable that could be used to solve for the constant of variation k.
Then it says that they surveyed 100 miles of ground and found 12 deer. They want the constant of variation k.
And the third part to the question: if the entire nature preserve is 2,500 acres, then what is the total white tail deer population in the preserve?
I think that the first question might be y=kx? But I can't be sure and then I cannot figure out how that affects problem number two. I think the third one is just a simple ration or proportion equation that would be
100/12=2500/x which would make x 300. Again not sure, and can't figure out how this fits in with the first two parts of the question. Please help, and thank you in advance
Click here to see answer by Mathtut(3670) |
Question 172838: Kim was selected class president. She received 3 votes for every 2 that Amy got. No one else ran. However, if 8 of the people who voted for Kim had voted for Amy instead, Kim would have received only 1 vote for every 2 that Amy would have gotten. How many people voted?
Click here to see answer by Mathtut(3670) |
Question 163481: The annual cost in dollars for removing p% of the toxic chemicals from a town’s water supply is given by the formula C(p) 500,000/100-p
a) Use the accompanying graph to estimate the cost for removing 90% and 95% of the toxic chemicals.
b) Use the formula to find C(99.5) and C(99.9).
c) What happens to the cost as the percentage of pollutants removed approaches 100%?
Click here to see answer by checkley77(12844) |
Question 161870: Cindy's job is to check computer printers for defects. Out of 420 printers she has to check, only 3 of the first 84 have been defective. Using this information, what is the best prediction of the total number of printers in this group that will be defective?
I know that 420/84 is 5 and that 5x3=15, but how do you set up the problem?
Click here to see answer by actuary(112) |
Question 175996: If a cylinder has a raius of 3 cm and a length of 10 cm. and every dimension of the cylinder is multiplied by 3 to form a new cylinder. How is the ratio of the volumes related to the ratio of the corresponding dimensions?
Click here to see answer by Alan3354(69443) |
Question 176133: Hi there. I'm currently trying to complete an assignment and the first question has me stumped. I've tried looking up how to do it, tried ratio etc and can't for the life of me work out the formula I'm meant to use. The question as printed is as follows:
'A commercial developer is considering three brown field sites on the perimeter of Leeds city centre. All plots are being sold by Leeds City Council at prices such that plot A is £20 000 less than plot B, and plot B is £ 30 000 more than plot C. The sale of the three plots will generate an income of £3 190 000 for the council. Determine the sale price for each plot.'
Thanks in advance for your help.
Click here to see answer by gonzo(654) |
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