Tutors Answer Your Questions about Proportions (FREE)
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.
Click here to see answer by josgarithmetic(39616) |
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?
Click here to see answer by Boreal(15235)  |
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)  |
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.
Click here to see answer by math_tutor2020(3816) |
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?
Click here to see answer by ikleyn(52776)  |
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.
Click here to see answer by Boreal(15235)  |
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.
Click here to see answer by math_tutor2020(3816) |
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