Questions on Algebra: Proportions answered by real tutors!

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Question 1187241: A video store manager observes that the number of DVDs sold seems to vary inversely as the price per DVD. If the store sells 490 DVDs per week when the price per DVD is $10.40, how many does he expect to sell if he raises the price to $16? Round your answer to the nearest integer if necessary.
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Question 1187830: N7000 was shared by four people in ratio x:2:1:3. If the least was N702, what is x?
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Question 1187830: N7000 was shared by four people in ratio x:2:1:3. If the least was N702, what is x?
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Question 1187830: N7000 was shared by four people in ratio x:2:1:3. If the least was N702, what is x?
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Question 1187919: A map has a scale of 1 centimeter: 8 kilometers. Use the given actual distance to find the distance on the map: 16 km
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Question 1188349: Chris has a miniature model of the boat that he is building. The length of the model is 4.5 inches and the height is 2 inches. If the length of the actual boat is 18 feet, what is the height?

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Question 1188398: megan takes 30 seconds to run 100m while her brother takes 20 secs. if megan is given a 200 metre head start how long would it take her brother to catch up to her
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Question 1188398: megan takes 30 seconds to run 100m while her brother takes 20 secs. if megan is given a 200 metre head start how long would it take her brother to catch up to her
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Question 1188507: Liz is taking guitar lessons and practices every night. Yesterday, she played a total of 40 chords in 8 minutes. Today, she will play chords for 5 minutes.
If she plays at the same rate, how many chords will Liz play today?

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Question 1188759: The change of a woman getting breast cancer in her lifetime is one out of eight rate, how many women in a classroom of 32 women would be expected down with breast cancer in her lifetime?
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Question 1188759: The change of a woman getting breast cancer in her lifetime is one out of eight rate, how many women in a classroom of 32 women would be expected down with breast cancer in her lifetime?
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Question 1189010: How do you figure out what 8 hours and 1/4 is equal too?

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Question 1189010: How do you figure out what 8 hours and 1/4 is equal too?

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Question 1189352: If a store prices each book at $x, (64 − 8𝑥) books will be sold.
(i) The total amount of money earned from the sale of the book is $y. express y in
terms of x

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Question 1189541:
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Question 1189876:
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Question 1189897: Shauna is buying a laptop computer. She will pay 8% sales tax on the price before any rebates. Where will she get a better buy?
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Question 1189897: Shauna is buying a laptop computer. She will pay 8% sales tax on the price before any rebates. Where will she get a better buy?
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Question 1189904: Shauna is buying a laptop computer. she will pay 8% sales tax on the price before any rebates. where will she get a better buy?
XYZ-Tronic
price - $629
mail-in rebate $150
TEC-U-COMP
price - $649
discount 25% off

Click here to see answer by mananth(16946) About Me 
Question 1189904: Shauna is buying a laptop computer. she will pay 8% sales tax on the price before any rebates. where will she get a better buy?
XYZ-Tronic
price - $629
mail-in rebate $150
TEC-U-COMP
price - $649
discount 25% off

Click here to see answer by MathTherapy(10551) About Me 
Question 1189904: Shauna is buying a laptop computer. she will pay 8% sales tax on the price before any rebates. where will she get a better buy?
XYZ-Tronic
price - $629
mail-in rebate $150
TEC-U-COMP
price - $649
discount 25% off

Click here to see answer by josgarithmetic(39616) About Me 

Question 1190236: A sum of $25,000 is divided among peter , queen and Raymond.
Raymond received half . Peter receives $3,125 and Queen receives the remainder. Calculate
The ratio in which the $25,000

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Question 1190238: A sum of $25,000 is divided among Peter, Queen and Raymond.Raymond received half, Peter receives $3,125 and Queen receives the remainder calculate the ratio in which the $25,000 was divided
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Question 1190728: Find the variation constant and an equation of variation if y varies directly as x and the following conditions apply.
y=90 when x=1/9

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Question 1190728: Find the variation constant and an equation of variation if y varies directly as x and the following conditions apply.
y=90 when x=1/9

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Question 1190837: 1860 is invested for 2 years at 5% per annum compound interest. How much more profitable would it be to have the interest added half yearly, rather than yearly?
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Question 1190901: saver deposits 240000 in a bank which pays compound interest at 9.5% per annum half yearly. Find the amount in the bank at the end of one year.
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Question 1191107: In one particular town, two-thirds of the men are married to three-fourths of the women. Assume heternormative, puritanical definitions of marriage (i.e. one man married to one woman). What is the ratio of men to women? Solve using a scaling up method and use visuals.

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Question 1191649: A rectangle that is 20 cm long and 28 cm wide is the same shape as one that is 9 cm long and z cm wide. Find the value of z.
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Question 1192396: A right rectangle prism has a base with an area of 25.5 square feet and a volume of 153 cubic feet. What is the height,in feet,of the rectangular prism?
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Question 1192396: A right rectangle prism has a base with an area of 25.5 square feet and a volume of 153 cubic feet. What is the height,in feet,of the rectangular prism?
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Question 1192783: There is a ratio 6:5 men to women if there are 3600 men how many women are there
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Question 1193160: The probability that an 80-year-old male in the U.S. will die within one year is approximately 0.069941. If an insurance company sells a one-year, $14,000 life insurance policy to such a person for $415, what is the company's expectation?
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Question 1193483: A punch recipe calls for 2 cups of soda for every 3 cups of juice. If you want to make 65 cups, how many cups of juice will you need?
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Question 1193522: lashonda drove 495 miles in 9 hours,at the same rate how many miles would she drive in 7 hours?

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Question 1193522: lashonda drove 495 miles in 9 hours,at the same rate how many miles would she drive in 7 hours?

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Question 1193653: Suppose that The lengths of pregnancies are normally distributed with a mean of 271 days and a standard deviation of 10 days. how do I find the percentage of pregnancies that are longer than 254 days? for my immediate computations used for or more decimal places give my final answer to two decimal places.
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Question 1193652: Suppose that The lengths of pregnancies are normally distributed with a mean of 271 days and a standard deviation of 10 days. how do I find the percentage a pregnancy that are longer than 250 4 days for my immediate computations used for or more decimal places give my final answer to two decimal places.
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Question 1193949: if 7 girls take 1 hour to do work how many hours will 3 girls take?

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Question 1193949: if 7 girls take 1 hour to do work how many hours will 3 girls take?

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Question 1193949: if 7 girls take 1 hour to do work how many hours will 3 girls take?

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Question 1193949: if 7 girls take 1 hour to do work how many hours will 3 girls take?

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Question 1194176: On a recent day, the exchange rate for U.S. dollars to European euros was 0.89 dollar per euro. On that day, about how many euros would you get for 25 dollars?
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Question 1194531: Is y=6x proportional or not proportional?
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Question 1194531: Is y=6x proportional or not proportional?
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