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Math - Proportions

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Math
I'm doing proportions, and I'm kinda confused with this one problem.. x/3=1/5. the way I do proportions is by cross multiplying, so I get 3=5x? I don't know what my answer would be?

stats
scores on a University exam are normally distributed with a mean of 68 and a standard deviation of 9. use the 68-95-99.7 rule to answer the following questions 1) what proportions of students score between a 59 to 77? 2) what proportions of students score between a 50 to 86? 3...

Math--Proportions
Solve for x: 2 to x+1=x+2 to 3 or 2 to x+3= x+2 to x+5 (the proportions end up being the same in the end) I keep getting to the part after you FOIL, and then I get stuck

8th grade Algebra I (junior level math)
Hello, I am currently in Unit 4-1 (Ratio, and Proportions) and I don't understand how pairs of ratios could form proportions. Could someone give me step by step instructions? Thank You

math156-proportions
I can solve the proportions by any method. can anyone help me understand this. #1 4/15 = x/5 #2 x/3 = x+10/6

AP Statistics
12) Which of the following statements is true? a) The sampling distribution of the difference between two proportions will always be normal. b) When comparing two population proportions, either sample proportion can be used as the unbiased estimate of the true population ...

statistics
For three independent samples, each with n= 100, the respective sample proportions are 0.30, 0.35, and 0.25. Use the 0.05 level in testing whether the three population proportions could be the same.

stats
The purpose of using stratified random sampling is to guarantee that the ______________. a. proportions within the samples represent the proportions in the population. b. sampling variability is increased c. sample groups are highly varied for more precise outcomes d. sampling...

Chemistry
What data led to the development of the Law of Multiple Proportions? Give an example and explain why this law is important in chemistry. Would this be a good answer: John Dalton used the same observations he used for his law of definite proportions to help develop the law of ...

Chemistry
For this problem would I have to use proportions? Analysis of a metal chloride XCI3 shows that it contains 67.2 % CI by mass. Calculate the molar mass of X and identify the element. I tried using proportions: X+CI3/CI3 = ?/67.2 but then I had to find for both X and ?. The ...

chemistry
which pairing below does not correctly match the scientist with the contribution to the understanding of the atom A. Proust and the realization that the elements of compounds are found in certain proportions by mass B. Thomson and the law of definite proportions. C. Dalton and...

chemistry
which pairing below does not correctly match the scientist with the contribution to the understanding of the atom A. Proust and the realization that the elements of compounds are found in certain proportions by mass B. Thomson and the law of definite proportions. C. Dalton and...

math
Solve the proportions, 4 : 5::8 :b

math
Solving the proportions b : 16::6 : 4

math
proportions 4/21=x/168

Math (Proportions)
1a. x/20=52,5/75= 14 1b. 13/16=x/100= 81.25 1c. 18/25=1/x= 1.38 1d. 25/18=1/x= .72

math proportions
What is 1000/x = 25/64

math
Show that the given proportions are equivalent. a+c / b+d = a-c / d-b and a / b = c / d

math
algebra properties and proportions (x+3) 5 ----- = --- x =9/2 6 4 How do you get to this answer?

Statistics
You want to know if there's a difference between the proportions of high school students and college students who read newspapers regularly. out of a random sample of 500 high-school students, 287 say they read newspapers regularly, and out of a random sample of 420 college ...

Stats
Which of the following statement is true? In testing the hypothesis for the equality of two population proportions, the acceptance region for the null hypothesis will be wider than the confidence interval for two population proportions, assuming the same value of alpha. A 95% ...

Statistics
You want to know if there's a difference between the proportions of high school students and college students who read newspapers regularly. out of a random sample of 500 high-school students, 287 say they read newspapers regularly, and out of a random sample of 420 college ...

statistical applications
In the media, numerous surveys are often displayed reporting percentages or proportions. A margin of error is often reported in the survey and this is used to calculate confidence intervals. Why is it important to create/report confidence intervals (CI) rather than just ...

Math
Describe an application for the use of ratios or proportions

Math
Describe an application for the use of ratios or proportions

math
algebra properties and proportions (x+1) 1 ----- = --- (x+2) 3 How do you come to this answer?

Math
Describe an application for the use of ratios or proportions

math proportions
17/32 = x/100 1700 = 32x x= 53 1/8 Am I right? yep

math
application of Proportions-tic-tac-toe boards ?

college math
solve these proportions and show work: x/2 = 1/2 plus 1 Thanks

Statistics
Help Me Please! In a survey of families in which both parents work, one of the questions asked was, "Have you refused a job, promotion, or transfer because it would mean less time with your family?" A total of 200 men and 200 women were asked this question. "Yes" was the ...

statistics
Which of the following statements are true? (A) In testing the hypothesis for the equality of two population proportions, the acceptance region for the null hypothesis will be wider than the confidence interval for two population proportions, assuming the same value of alpha...

Math
Is this statement true or false? The following proportions will yield the same results: x/2=4/9 and 9/2=4/x

Statistics
Find the sample proportions and test statistic for equal proportions. Is the decision close? Find the p-value. a. Dissatisfied workers in two companies: x1 = 40, n1 = 100, x2 = 30, n2 = 100, รก = .05, two tailed test. b. Rooms rented at least a week in advance at two hotels: ...

math
Soory I made a mistake on the last one I meant algebra properties and proportions (x+1) 2 ----- = --- x = 1 (x+2) 3 How do you come to this answer?

Math
Create 4 proportions that will work for the following scenario: If the scale is 3.5 in = 8 ft and the drawing measures 6 in, what is the actual distance?

math
I go to Conexus and I am super duper behind do you happen to have the answers for the proportions quiz???????? PLEASE A c d c b a d

geometry
in a right triangle ABC, if ab is 14 and bc is 12 wut is bd? there is a pic of a large trangle abc and in it is a line drawn down angle c making it line cd. angle acd then becomes a right trangle as well. i tried working = proportions and pyth thm but i don't seem to be ...

TRIANGLE SIMILARITIES RATIOS AND PROPORTIONS
imageshack(.)(us)/photo/my-images/834/j6wv.jpg/ imageshack(.)(us)/photo/my-images/17/6n4x.jpg/ please PLEASE IM BEGGING YOU MY TEACHER WILL BE GIVING ME 79 IF I DIDN'T GET THIS .. OR ELSE LOWER THAN THAT. PLEASE TRIANGLE SIMILARITIES RATIOS AND PROPORTIONS - BARBIE LEE, ...

Math - Proportions
This seems like an easy question but I can not seem to find the answer in my reading material. Can anyone possibly help?

6th Grade Math: Proportions
14/38=X/29. I'm still confused about figuring out what x is and getting X on its own. Please Help!!!

Math
I have two math problems I need help with- Percent proportions 1. 62% of 146 is what number? 2. 18.4% of 880 is what number?

Math
How have proportions been useful to solve various math problems that we have studied?

proportions
3/8 x __ = __ 3 5/12

math Statistics
Suppose that 33 out of 300 selected american drivers read the newspaper while driving. what percent of sample proportions are greater than this?

Math
Help me- Proportions A store has T-shirts on slae at 2 for $5.50. At this rate, what do five T-shirts cost?

6th grade math
I need help explaining ratios and proportions to my 6th grader

math
how do u solve a unit rate problem using proportions to solve

math
im doing percent proportions and it is asking: 57% if 109 is what number? And i already know that you start with 57/100 = x/109 but how do you get the answer, i cant figure it out!!!

Math 8 - HELP!!!!!
Ratio, Proportions, and Similarity Similar Figures A room is 36 ft long and 18 ft wide. What is the length to width ratio?

Math (Proportions)
Simplify each expression if possible by combining like terms. If not possible, write simplified 2x+9x I don't understand what to do

Math
How is using a conversion factor different than using proportions to convert measurement units? Explain which is easier and why.

8th grade Algebra I (junior level math)
How do i solve proportions? step by step answers plz!!!! EXAMPLE! g/5 = 6/10

Proportions
b = 6 --- --- 15 10 how do I solve this problems

math
one more I really do not understand this one Describe an application for the use of ratios or proportions that is or could be useful in your daily life.

statistics
During the first 13 weeks of the television season, the Saturday evening 8:00 P.M. to 9:00 P.M. audience proportions were recorded as ABC 29%, CBS 28%, NBC 25%, and independents 18%. A sample of 300 homes two weeks after a Saturday night schedule revision yielded the following...

statistics
During the first 13 weeks of the television season, the Saturday evening 8:00 P.M. to 9:00 P.M. audience proportions were recorded as ABC 29%, CBS 28%, NBC 25%, and independents 18%. A sample of 300 homes two weeks after a Saturday night schedule revision yielded the following...

Proportions
What is the solution to the proportion 3y-8/12=y/5? can someone help me do this?

Algebra
What is the mean and extremes of proportions?

math
As the sample size n increases, the standard error of the proportions will __________. a)be equal to one b)become larger c)become smaller d)remain the same IS IT B)?

Math-Proportions
My math question says- 1 1/2:9 = x:18 Now I gotta figure out the missing number [x]...I have 3 guesses on what answer the missing number [x] is! Either- A)2 1/2 B)3/4 or C)3 Which one is it? 1 1/2:9 = x:18 1 1/2/9 = x/18 x = 1 1/2*18/9 x = 3 hi i like garry unfortunately its ...

Math
OK, I have had trouble with math, 'C' average, and we are learning proportions. I don't get them! Can someone please do a proportion and then tell the steps to do it? Ex. 4/6= 8/X. Steps: 4/6 equals 8 over x. You do _______ do get ________ over , so X=12. [I know this is rong...

economics 2
During the first 13 weeks of the television season, the Saturday evening 8:00 P.M. to 9:00 P.M. audience proportions were recorded as ABC 29%, CBS 28%, NBC 25%, and independents 18%. A sample of 300 homes two weeks after a Saturday night schedule revision yielded the following...

Statistics
During the first 13 weeks of the television season, the Saturday evening 8:00 P.M. to 9:00 P.M. audience proportions were recorded as ABC 29%, CBS 28%, NBC 25%, and independents 18%. A sample of 300 homes two weeks after a Saturday night schedule revision yielded the following...

statistics
I need to find the chi square distribution. Thanks During the first 13 weeks of the television season, the Saturday evening 8:00 P.M. to 9:00 P.M. audience proportions were recorded as ABC 29%, CBS 28%, NBC 25%, and independents 18%. A sample of 300 homes two weeks after a ...

statistics
I need to find the chi square distribution. Thanks During the first 13 weeks of the television season, the Saturday evening 8:00 P.M. to 9:00 P.M. audience proportions were recorded as ABC 29%, CBS 28%, NBC 25%, and independents 18%. A sample of 300 homes two weeks after a ...

math
lydia wrote 4_1/2 pages of her science report in one hour. what was her writing rate in pages per minute? (2-4 rates ratios and proportions)

Math
Can someone explain to me in there own words How is using a conversion factor different than using proportions to convert measurement units and which one is easy because i don't understand

Geometry
Can someone tell me how to solve these proportions? Thank you 5 7 ---- ----- = x - 1 x

statistics; emergency please help me
During the first 13 weeks of the television season, the Saturday evening 8:00 P.M. to 9:00 P.M. audience proportions were recorded as ABC 29%, CBS 28%, NBC 25%, and independents 18%. A sample of 300 homes two weeks after a Saturday night schedule revision yielded the following...

proportions
make 3/5 u=in to a percent then round it to nearest tenth

geometry
How are proportions solved when brought out in word problems?

stats
How would r change if researchers had recordered the proportions?

Genetics
Can you help me determine the phenotype and proportions expected from these crosses in chickens? a) RR Pp x rr Pp b) rr PP x Rr Pp c) Rr Pp x Rr pp

algebra
use each number once to form three proportions. 1,2,10,4,12,20 15,5,16,6,8,3

math
Find the value of z that would be used to test the difference between the proportions, given the following. (Use G - H. Give your answer correct to two decimal places.) Sample n x G 386 327 H 414 321

Math
Find the value of z that would be used to test the difference between the proportions, given the following. (Use G - H. Give your answer correct to two decimal places.) Sample n x G 386 327 H 414 321

math
Find the value of z that would be used to test the difference between the proportions, given the following. (Use G - H. Give your answer correct to two decimal places.) Sample n x G 386 327 H 414 321 .

math
A persons height is 161 and the persons shadow is 280, and a objects height is 345. Solve by using proportions

math
Person's height is 163 and the person's shadow is 290. The objects shadow is 345. Solve by using proportions

math
Persons height is 165 and the persons shadow is 285. The objects shadow is 345. Solve by using proportions

Math
is this the correct answer? I might post more on this exact post, so please bare with me? These are proportions 1.) 2:5 = 4:y Answer: y=2

Math
In right triangle ABC, altitude CD is drawn to hypotenuse AB. If AD equals 4 and AC exceeds DB by 1, find DB. It is from a worksheet about proportions in a right triangle.

math
A double recipe of cookies calls for 5 cups of flour. Which of the following proportions could be used to find the amount of flour for a triple recipe? 5/2= f/3 2/5=f/3 2/3 = f/5 3/2=5/f

math
Your fixed expenses are $1,035.65/month and are 36% of your realized income. Use proportions to compute the realized income on your budget. I am lost please help

consumer math
Your fixed expenses are $1,035.65/month and are 36% of your realized income. Use proportions to compute the realized income on your budget. I am lost please help

math
Use proportions to solve this problem: Lisa ran 3 miles in 21 minutes. At that rate, how long would it take Lisa to run 5 miles?

algebra 1
I am working on cross products of proportions. one question is 5/7 = 3w/21 Can someone help?

Business Statistics
1- When the necessary conditions are met, a two-tail test is being conducted to test the difference between two population proportions. The two sample proportions are p1= 0.25 and p2 = 0.20 , and the standard error of the sampling distribution of p1 − p2 is 0.04. The ...

Math
How would proportions be used to "scale up" or "scale down" something? (Not really sure if I even understand what this means. I even read my text and I can't figure this out.)

Math
Joan has two similar rectangular shaped pieces. One has with 4 inches in length 6 inches and the other has a width of 4 inches period what is the area of the larger rectangle piece. use proportions

Geometry
Find the value of the variable x in the following proportions 6/x = 9/8 x=48/9=5.333333... 5/5 = 4/x x=4 1/2 = 2/x x=4 x/10 = 10/8 x=12.5 Are my answers correct?

chemistry
What is composed of atoms in fixed proportions? A. mixtures B. compounds C. electrons D. elements

proportions
In Spanish class, the girl to boy ratio is 6 to 4. If there are a total of 20 students, how many boys are there?

science
What happened to the proportions of the two phenotypes as the F1 generation grew from 10 to 100 offspring? Why?

algebra
Which of the following proportions will allow you to correctly compute the answer to the question: 51 in = ___ft. ? 1. 51/x = 1/12 2. x/51 = 12/1 3. 51/12 = 1/x 4. 51/x = 12/1

math algebra solve proportions
i need help on g over 32 = 8 over 64 solve each proportion

Geometry
Find the values of the variable x in the following proportions 5/3 / 4/3 = x / 20/9 x= 25/9 =2.77777.... 5/4 = x/3 x= 15/4 = 3.75 20/36 / 21/x x= 189/5 = 37.8 Are my answers correct?

chemistry
Do the relative proportions of elements ina agiven compound vary from sample? pls help

chemistry
Do the relative proportions of elements ina agiven compound vary from sample? pls help

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