Tutors Answer Your Questions about Proportions (FREE)
Question 1182453: A transformer has a secondary voltage of 140 volts and a secondary current of 3.5 amps. If the primary current is 10 amps, what is the primary voltage? (In this case, the voltages and currents are inversely proportional.)
Click here to see answer by ikleyn(52781)  |
Question 1182453: A transformer has a secondary voltage of 140 volts and a secondary current of 3.5 amps. If the primary current is 10 amps, what is the primary voltage? (In this case, the voltages and currents are inversely proportional.)
Click here to see answer by mananth(16946)  |
Question 1182969: I am trying to solve the following proportion problem:
"If p varies proportionally to s, and p = 6 when s = 3, which of the following equations correctly models this relationship?"
1. p = 2s
2. p = s/3
3. p = s + 3
4. s = 2p
I am trying to understand the phrase "if p varies proportionally to s."
Click here to see answer by Boreal(15235)  |
Question 1182969: I am trying to solve the following proportion problem:
"If p varies proportionally to s, and p = 6 when s = 3, which of the following equations correctly models this relationship?"
1. p = 2s
2. p = s/3
3. p = s + 3
4. s = 2p
I am trying to understand the phrase "if p varies proportionally to s."
Click here to see answer by ikleyn(52781)  |
Question 1183168: Below is a proportions word problem and the answer. However, I am trying to determine which number,(300 or 30), should be the numerator and which number,(300 or 30),should be the denominator when solving this problem.
Question: "The Statue of Liberty is about 300 feet tall and about 30 feet
wide. The town of Unionville is building a smaller model for
their Fourth of July celebration. Unionville's statue will be 3
feet wide. How tall should Unionville's statue be?
Answer: 300 feet tall = ? feet tall
30 feet wide 3 feet wide
Compare the denominators.
300 feet tall = ? feet tall
30 feet wide 3 feet wide
To get from 30 to 3, divide by 10. Divide the numerator and
denominator by 10 to find how tall the statue should be.
300 feet tall ÷10 = 30 feet tall
30 feet wide ÷10 = 3 feet wide
Unionville's statue should be 30 feet tall."
Click here to see answer by ikleyn(52781)  |
Question 1183168: Below is a proportions word problem and the answer. However, I am trying to determine which number,(300 or 30), should be the numerator and which number,(300 or 30),should be the denominator when solving this problem.
Question: "The Statue of Liberty is about 300 feet tall and about 30 feet
wide. The town of Unionville is building a smaller model for
their Fourth of July celebration. Unionville's statue will be 3
feet wide. How tall should Unionville's statue be?
Answer: 300 feet tall = ? feet tall
30 feet wide 3 feet wide
Compare the denominators.
300 feet tall = ? feet tall
30 feet wide 3 feet wide
To get from 30 to 3, divide by 10. Divide the numerator and
denominator by 10 to find how tall the statue should be.
300 feet tall ÷10 = 30 feet tall
30 feet wide ÷10 = 3 feet wide
Unionville's statue should be 30 feet tall."
Click here to see answer by MathLover1(20849)  |
Question 1183168: Below is a proportions word problem and the answer. However, I am trying to determine which number,(300 or 30), should be the numerator and which number,(300 or 30),should be the denominator when solving this problem.
Question: "The Statue of Liberty is about 300 feet tall and about 30 feet
wide. The town of Unionville is building a smaller model for
their Fourth of July celebration. Unionville's statue will be 3
feet wide. How tall should Unionville's statue be?
Answer: 300 feet tall = ? feet tall
30 feet wide 3 feet wide
Compare the denominators.
300 feet tall = ? feet tall
30 feet wide 3 feet wide
To get from 30 to 3, divide by 10. Divide the numerator and
denominator by 10 to find how tall the statue should be.
300 feet tall ÷10 = 30 feet tall
30 feet wide ÷10 = 3 feet wide
Unionville's statue should be 30 feet tall."
Click here to see answer by MathTherapy(10552)  |
Question 1183451: For testing independence of two variables, one of the variables has two possible categories and the other has three possible categories. The appropriate critical value of chi-square if the test statistic is to be carried out at the 2.5% level of significance is:
Click here to see answer by robertb(5830)  |
Question 1183453: Are all employees equally proven to having accidents? To investigate this hypothesis, Parry (1985) looked at a light manufacturing plant and classified the accidents by type and by age of the employee.
Age Accident (sprain) Accident (burn) Accident (cut)
Under 25 9 17 5
25 and over 61 13 12
Click here to see answer by greenestamps(13200)  |
Question 1183452: Upon leaving an assembly area, production items are examined and some of them are found to be in need of their further work or total scrapping. Tags on a sample of 150 items that failed final inspection show both the recommended action and the identity of the inspector who examined the item. The summary information for the sample is given below:
Recommended action Inspector A Inspector B Inspector C
Major Rework 20 14 13
Minor Rework 18 16 23
Scrap 16 21 9
NB: α = 5%.
Click here to see answer by greenestamps(13200)  |
Question 1183471: A random sample of 8 applicants for a certain foreign job is selected. The number of years that these applicants have studied French in high school or university, X, and the mark which they obtained in a proficiency test in French, Y, are recorded. The following information is given: ∑X =32 ∑Y =528 ∑XY=2136 ∑X2 =130 ∑Y2 =34872 Fitting a regression line, which of the following statements is incorrect?
Click here to see answer by MathLover1(20849)  |
Question 1183470: An agency is investigating whether a male released from prison makes a different adjustment to civilian life if he returns to his hometown or if he goes elsewhere to live. The data is as follows:
Residence after release from prison
Civilian life (outstanding)
Civilian life (good)
Civilian life (fair)
Civilian life (unsatisfactory)
Hometown 27 35 33 25
No hometown 13 15 27 25
The expected frequency for a person returning to hometown but is unsatisfied, with civilian life, is equal to
Click here to see answer by ikleyn(52781)  |
Question 1184747: YOU ARE MAKING JUICE FOR A FRIENDS BIRTHDAY PARTY. YOUR RATIO OF WATER TO ORANGE JUICE CONCENTRATE IS 7:3. YOU MAKE 80 CUPS OF ORANGE JUICE IN ALL. AT THE PARTY, YOU AND YOUR FRIENDS DRINK 3/4 OF ALL THE ORANGE JUICE YOU MADE. HOW MANY CUPS OF ORANGE JUICE CONCENTRATE ARE LEFT? HOW MANY CUPS OF WATER ARE LEFT?
Click here to see answer by ikleyn(52781)  |
Question 1184747: YOU ARE MAKING JUICE FOR A FRIENDS BIRTHDAY PARTY. YOUR RATIO OF WATER TO ORANGE JUICE CONCENTRATE IS 7:3. YOU MAKE 80 CUPS OF ORANGE JUICE IN ALL. AT THE PARTY, YOU AND YOUR FRIENDS DRINK 3/4 OF ALL THE ORANGE JUICE YOU MADE. HOW MANY CUPS OF ORANGE JUICE CONCENTRATE ARE LEFT? HOW MANY CUPS OF WATER ARE LEFT?
Click here to see answer by josgarithmetic(39617) |
Question 1185163: A scientist has two solutions, which she has labeled Solution A ad Solution B. Each contains salt. She knows that Solution A is 60% salt and Solution B is 90% salt. She wants to obtain 90 ounces of a mixture that is 65% salt. How many ounces of each solution should she use?
Click here to see answer by Alan3354(69443)  |
Question 1185163: A scientist has two solutions, which she has labeled Solution A ad Solution B. Each contains salt. She knows that Solution A is 60% salt and Solution B is 90% salt. She wants to obtain 90 ounces of a mixture that is 65% salt. How many ounces of each solution should she use?
Click here to see answer by greenestamps(13200)  |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265
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