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Math ratio and proportion

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  • Adith McKenzie Nov 22, 2011

    4:5 are boys and girls of 1980 students, what are the boys

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Ratio: a comparative value. "so many pounds to ounces"
i.e. 3 to 1
proportion: a part of the original. a percentage of the whole.
i.e.: a proportional band of a thermostat. that "dead zone" between the set point and the desired point is 10 degrees.

Posted on Dec 27, 2007

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Posted on Jan 02, 2017

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The girls basketball team has had the same record every season the team has won a total of 169 games while losing only 13 games find the constant of proportionality of wins to losses


This is a school math problem.
We are neither a school, nor do we do math problems for you.
We answer problems people have with PRODUCTS people have around the home.
A good question might be:
One of the legs on my wood dining room table is loose.
What can I do to fix it?
God bless your efforts.

Feb 22, 2018 | The Video Game Consoles & Games

1 Answer

Please explain how you do ratios


A ratio can be simplified by dividing both sides of the ratio by the Highest Common Factor (HCF). The highest common factor is the largest number that goes into both numbers of your ratio. In example 1 you are asked to simplify the ratio 6:8. Here the HCF is 2 so divide both sides of the ratio by 2 to give 3:4.

https://www.youtube.com/watch?v=cbjQWf411O8

Mar 04, 2015 | The Learning Company Achieve! Math &...

1 Answer

What is the meaning of vertical method and horizontal method in a proportion?


Never heard these names. But it might refer to the ways you write proportions a:b=c:d can be cast as (a/b)=(c/d).

Oct 03, 2014 | Games

1 Answer

What is a proportion ?


A proportion is an equality between ratios. Let a/b and c/d be two ratios. If the two ratios are equal you can write a/b=c/d. This equality constitutes a proportion.

Oct 01, 2013 | Mathsoft StudyWorks! Middle School Deluxe...

1 Answer

I dont know what a ratio is


A ratio is a division of two quantities that may or may not be of the same nature.

Same nature
You can for example have the ratio of the perimeters of two similar triangles. ratio=perimeter1/perimeter2

Different nature
:
If an automobilist travels at a constant rate (notice the root RATE, RATIO), the rate of travel is expressed as the ratio of the distance travelled (d) to the time taken to travel the distance. That ratio is called the speed v
v=d/t
Since the ratio involves two quantities of different nature, the speed has a unit derived from the unit of distance and the unit of time; Example v=65 km/h

Other examples:
There is a ratio of 1.45 US $ to 1 Euro. This is usually referred to as the exchange RATE.
The odds of something happening is 7 to 2.

What is really meant when a ratio is involved depends on the context. But what you should remember is that a ratio involves the division of two quantities.
Proportions: The equality of two ratios is called a proprtion.

Feb 08, 2012 | Office Equipment & Supplies

1 Answer

Why did my picture become big so I can not see the sideline information


Press the RATIO button repeatedly to select the desired picture format. You can also adjust Aspect Ratio in the OPTION menu.
  1. Set By Program. Selects the proper picture proportion to match the source’s image. (4:3 → 4:3, 16:9 → 16:9)
  2. 4:3. Choose 4:3 when you want to view a picture with an original 4:3 aspect ratio, with gray bars appearing at both the left and right sides.
  3. 16:9. Choose 16:9 when you want to adjust the picture horizontally, in a linear proportion to fill the entire screen.
  4. Horizon. Choose Horizon when you want to adjust the picture in a non-linear proportion, that is, more enlarged at both sides, to create a panorama view.
  5. Zoom 1. Choose Zoom 1 when you want to view the picture without any alteration. However, the top and bottom portions of the picture will be cropped.
  6. Zoom 2. Choose Zoom 2 when you want the picture to be altered, both horizontally extended and vertically cropped. The picture taking a halfway trade off between alteration and screen coverage.
  7. Cinema Zoom. Choose Cinema Zoom when you want to enlarge the picture in correct proportion. Note: When enlarging or reducing the picture, the image may become distorted. You can adjust the enlarge proportion of Cinema Zoom using D / E button. The adjustment range is 1~16.

Oct 18, 2009 | LG 42LC2D 42 in. LCD HDTV

1 Answer

How many atoms are present?


(0.540 g)(6.02 1023 atoms) 27.0 g 1.20 1022 atoms

Because density equals mass per unit volume, the mass of the cube is m V (2.70 g/cm3)(0.200 cm3) 0.540 g write this relationship twice, once for the actual sample of aluminum in the problem and once for a 27.0-g sample, and then we divide the first equation by the second: m sample m 27.0 g kN sample kN27.0 g

m sample m 27.0 g

Nsample N27.0 g

To solve this problem, we will set up a ratio based on the fact that the mass of a sample of material is proportional to the number of atoms contained in the sample. This technique of solving by ratios is very powerful and should be studied and understood so that it can be applied in future problem solving. Let us express our proportionality as m kN, where m is the mass of the sample, N is the number of atoms in the sample, and k is an unknown proportionality constant. We

Notice that the unknown proportionality constant k cancels, so we do not need to know its value. We now substitute the values: 0.540 g 27.0 g Nsample 6.02 N sample 1023 atoms

Jan 21, 2009 | Acer TravelMate 2300 Notebook

1 Answer

I don't know the proportions of mixer to petrol for a leaf blower


you are not going to hurt the unit if you run a 20:1 ratio on the unit until your friend gets ahold of you and then lets you know the proper ratio. when I use mine I do a 20:1 ratio and sometimes I just guess and have had the same blower for over 6 years now. McCulloch is apart of husqvarna and ushally theirs are a 20:1 ratio as well on the smaller units. bigger the unit ushally the bigger the ratio.

Nov 10, 2008 | Garden

1 Answer

Maths


contact your math's tutor because your math's is PATHETIC,sir..
try findin the answer in r.s aggarwal

Mar 08, 2008 | Computers & Internet

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