Questions on Algebra: Proportions answered by real tutors!

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Question 1159820: The graph of the line that represents a proportional relationship between y and x has a unit rate of 0.4; that is, a change in 1 unit in x corresponds to a change of 0.4 units in y. The equation of this relationship can be written as:
y = 0.4x
y = 4x
y = 1/4x
y = x

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Question 1159971: If a ship had 26 sheep and 10 goats onboard, how old is the ship's captain?
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Question 1159971: If a ship had 26 sheep and 10 goats onboard, how old is the ship's captain?
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Question 1160556: Three people share $5992 so that the first gets twice as much as the second, and the second gets twice as much as the third. How much does the first get?
Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 1160788: An amount was invested at r% per quarter. What value of r will ensure that accumulated amount at the end of one year is 1.5 times more than amount invested? Correct to 2 decimal places.

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Question 1160815: A ball is drawn randomly from a jar that contains 4 red balls, 2 white balls, and 3 yellow balls. Find the probability of the given event.
Write your answer as a simplified fraction.
A red ball is drawn?

A white ball is drawn

A yellow ball is drawn?

Click here to see answer by Boreal(15235) About Me 

Question 1161670: The electrical resistance R of a wire varies directly as the length L and inversely as the square of the diameter d. Obtain an equation connecting R,L and d if R =27 when L=3 and d=2. Calculate (a) value of R when L=8, d=3
(b) value of d when R=16,L=18

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Question 1161794: A ladder leans against a vertical wall at an angle 60 degree to the wall. If the height of the Wall is 12m,calculate the length of the ladder

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Question 1161794: A ladder leans against a vertical wall at an angle 60 degree to the wall. If the height of the Wall is 12m,calculate the length of the ladder

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Question 1161794: A ladder leans against a vertical wall at an angle 60 degree to the wall. If the height of the Wall is 12m,calculate the length of the ladder

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Question 1162457: water is the universal solvent that has a chemical formula H2O. Hydrogen has 1g mass while oxygen has 16g mass. what is the ratio of oxygen mass to hydrogen mass in the formula H2O?
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Question 1162535: A strain of Bacteria that is currently growing on your kitchen counter doubles every 20 minutes. Assuming that you start with one single bacterium sitting on your counter, how many bacteria would be present at the end of 150 minutes?
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Question 1162830: Hello,
Question:
The ratio of the number of toy cars to the number of toy trains in a shop was 2:3. When the shopkeeper bought 30 toy cars, the ratio of the number of toy cars to toy trains became 3:4. How many toy trains were there in the shop.
How would I go about setting up this problem and solving.
Thanks in advance.

Click here to see answer by Boreal(15235) About Me 
Question 1162830: Hello,
Question:
The ratio of the number of toy cars to the number of toy trains in a shop was 2:3. When the shopkeeper bought 30 toy cars, the ratio of the number of toy cars to toy trains became 3:4. How many toy trains were there in the shop.
How would I go about setting up this problem and solving.
Thanks in advance.

Click here to see answer by solver91311(24713) About Me 

Question 1163038: The nutrition information on the cereal box says that a 1/2-cup serving provides 210 calories and 3 grams of dietary fiber. At that rate, find how many calories and grams of fiber are in a 1/3-cup serving
Click here to see answer by ikleyn(52752) About Me 

Question 1163069: While testing the effects of various conditions on memory recall, Dr. Jones determines that memory recall, represented by M, is directly proportional to the square of the number of hours of sleep a participant recieved the night before and inversely proportional to the square root of the calories a participant has consumed that morning. The variable h denotes the hours of sleep the participant recieved, and c represents the number of calories consumed. If k is a constant, which of the following could express h, in terms of c?
a) h=(√c*M)/k
b) h=cM^2k
c) h=(∜c*√M)/k
d) h= ∜(cM) /k

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Question 1163419: M varies directly as L and m,m=6 and L=2
Find
1_the relatioship between m and L
2_the values of L when m=15
3_the value of M when L=30

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Question 1163585: A 30 L storage tank contains 6.85 kg of argon under preasure. if the gas is released into a 12-meter by 15-meter by 3.0-meter room, find the density of the argon, in g/l, once it has filled the room.
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Question 1163911: Mr. Smith waters one of his plants every 10 days and another plant every 14 days. If he waters both plants today, when is the next time both plants will be watered on the same day?
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Question 1163937: A doctor sees each of her patients for 25 minutes during a typical appointment.
How many patients can she see in a typical 7.5 hour day?

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Question 1164098: A merchant has coffee worth $40 a pound that she wishes to mix with 60 pounds of coffee worth $80 a pound to get a mixture that can be sold for $50 a pound. How many pounds of the $40 coffee should be used?
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Question 1164654: John and David are running around the same track at the same speed. When David started running, John had already run 3 laps. Con- sider the relationship between the number of laps that David has run and the number of laps that John has run.
b. Kacey is running 100-meter dashes. Each time she runs at a different, but constant speed. Consider the relationship between the speed at which Kacey runs and the time it takes Kacey to run 100 meters.
c. Maleka is running at a constant speed. Consider the relationship between the time Maleka has spent running and the distance she has run.
d. Water is draining out of a tub at aconstantrate. Consider the relationship between the time that has elapsed since water started draining out of the tub and the volume of water remaining in the tub.
e. Water is pouring into a tub at a constant rate. Consider the relationship between the time that has elapsed since water started pouring into the tub and the volume of water in the tub.

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Question 1165062: if x is to y amd x=4 when y=12 find the value of x when y=24
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Question 1165046: Charles has twice as much money as Dave. Ethan has 3 times as much money as
Charles. If Ethan has $36 more than Charles, what was the total amount of
money the three boys had?

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Question 1165075: On a​ map, 1 inch equals 15 miles. Two cities are 5 inches apart on the map. What is the actual distance between the​ cities?
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Question 1165522: It takes 3 people to clean a pool in 4 hours. How many people do we need to clean 6 pools in 8 hours?
It seems to be a triple proportion but how exactly would I set it up?

Click here to see answer by josgarithmetic(39613) About Me 
Question 1165522: It takes 3 people to clean a pool in 4 hours. How many people do we need to clean 6 pools in 8 hours?
It seems to be a triple proportion but how exactly would I set it up?

Click here to see answer by ikleyn(52752) About Me 
Question 1165522: It takes 3 people to clean a pool in 4 hours. How many people do we need to clean 6 pools in 8 hours?
It seems to be a triple proportion but how exactly would I set it up?

Click here to see answer by greenestamps(13195) About Me 

Question 1165651: Identify the proportions that are true.
A) 1/3=4/12
B) 1/2=6/12
C) 5/7=25/49
D) 5/6=11/12
E) none of these

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Question 1165647: Solve the proportion for n. (Enter a number. Round your answer to two decimal places.)
2/n=3/4

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Question 1165822: A wholesaler sells three types three types of GPS systems. A dealer orders twice as many economy systems at $40 each and 75 more econoplus systems at $80 dollar each than deluxe systems at $140 each for $42,000. How many of each were ordered?
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Question 1166081: 5 is to 6 as x is to 36
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Question 1166557: At a convenience store, you have a choice of five diet drinks, 10 regular drinks, six bags of fat-free chips, and 10 bags of regular chips. What is the probability that you will buy a regular drink and a regular bag of chips?

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Question 1166577: Solve for 3/14 = s-2/24

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Question 1166797: A taxi company charges a flat fee of $3.00 for each pick-up and $0.75 per mile. Miles driven will be the independent variable (x) and cost will be the dependent variable (y).
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Question 1166797: A taxi company charges a flat fee of $3.00 for each pick-up and $0.75 per mile. Miles driven will be the independent variable (x) and cost will be the dependent variable (y).
Click here to see answer by Theo(13342) About Me 

Question 1167333: A teacher chooses two students in a class of 15 girls and 10 boys. The students are randomly chosen. What is the probability that the teacher chooses two girls?
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Question 1167623: Race drivers must complete 200 laps in the Daytona 500. It Ricky Bobby completed 57% of the race, how many laps did he complete?
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Question 1167750: The ratio of the number of boys to the number of girls in school of 720 student is 3:5. If 16 new girls are admitted in the school .find how many new boys may be admitted so that the ratio of the member of boys to number the girls may change to 2:3

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Question 1167975: The tax for an annual income of ₱240,000 is ₱48,000. At the same rate, how much is the tax for ₱360,000?
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Question 1167976: Jerry can finish making sculpture in 3 days. How many sculptures can he finish in 30 days?
- and also is this a direct proportion?

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Question 1167976: Jerry can finish making sculpture in 3 days. How many sculptures can he finish in 30 days?
- and also is this a direct proportion?

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Question 1168132: Translate to a proportion: What percent of 45 is 62? Let p=the percent.
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Question 1168562: A, B, C, D, and E. are consecutive points on a line. If AB/BC=1/3, BC/CD=1/4, and
CD/DE=1/2, what is AC/BE ?
How would I set up this problem in order to solve it?

Click here to see answer by Edwin McCravy(20054) About Me 
Question 1168562: A, B, C, D, and E. are consecutive points on a line. If AB/BC=1/3, BC/CD=1/4, and
CD/DE=1/2, what is AC/BE ?
How would I set up this problem in order to solve it?

Click here to see answer by AnlytcPhil(1806) About Me