N N/X + 47. 3(x5) 5) -(x + 3) 48.-2(x7) 3(x +2) (5 2x)3x - 8) <7x + 2(5 - x) 51. 24 6x- 2(3x - 5) +2x 49. 4х 50. 3(х young adults with ents a 43% increase 1 + 2 2 52. ung adults with as- earnings of young 3 3 3 9 53. х + <\ und to the nearest 4 4 tatistics) x -5 54. 3 (2x + 6) twice the first sub- tegers is 16. Solve. utive odd integers the second by 54. 55. George Boros can pay his housekeeper $15 per weel his laundry, or he can have the laundromat do it at a 30 cents per pound for the first 10 pounds and 40 c each additional pound. Use an inequality to find the at which it is more economical to use the housekee the laundromat. day for a compact ver 100 miles driv- is $46.86, find how 56./In the Olympic gymnastics competition, Nana mus 65 to win the silver medal. Seven of ntific calculators is

N N/X + 47. 3(x5) 5) -(x + 3) 48.-2(x7) 3(x +2) (5 2x)3x - 8) <7x + 2(5 - x) 51. 24 6x- 2(3x - 5) +2x 49. 4х 50. 3(х young adults with ents a 43% increase 1 + 2 2 52. ung adults with as- earnings of young 3 3 3 9 53. х + <\ und to the nearest 4 4 tatistics) x -5 54. 3 (2x + 6) twice the first sub- tegers is 16. Solve. utive odd integers the second by 54. 55. George Boros can pay his housekeeper $15 per weel his laundry, or he can have the laundromat do it at a 30 cents per pound for the first 10 pounds and 40 c each additional pound. Use an inequality to find the at which it is more economical to use the housekee the laundromat. day for a compact ver 100 miles driv- is $46.86, find how 56./In the Olympic gymnastics competition, Nana mus 65 to win the silver medal. Seven of ntific calculators is

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter6: Vector Spaces

Section6.7: Applications

Problem 16EQ

See similar textbooks

Similar questions

Epidemic Model In a population of 200,000 people, 40,000 are infected with a virus. After a person becomes infected and then recovers, the person is immune cannot become infected again. Of the people who are infected, 5 will die each year and the other will recover. Of the people who have never been infected, 25 will become infected each year. How many people will be infected in 4 years?
If lnx+ln(x−4)=ln(7x)lnx+ln(x-4)=ln(7x), then x=x=
An fruit grower knows from previous experience and careful data analysis that if the fruit on a specific kind of tree is harvested at this time of year, each tree will yield, on average, 130 pounds, and will sell for $0.6 per pound. However, for each additional week the harvest is delayed (up to a point), the yield per tree will increase by 7 pounds, while the price per pound will decrease by $0.02.A) How many weeks should the grower wait before harvesting the apples in order to maximize the sales revenue per tree? (Round your answer to the nearest tenth of a week.)Answer: (rounded to the nearest tenth)B) Use your answer in part A to find the actual maximum revenue that can be expected. (Round your answer to the nearest dollar.)Answer: dollars (rounded to the nearest dollar)
A culture of the bacterium Salmonella enteritidis initially contains 50 cells. When introduced into a nutrient broth, the culture grows at a rate proportional to its size. After 1.5 hours, the population has increased to 975. (a) Find an expression for the number of bacteria after t hours. Thus the number of bacteria after 3 hours. After how many hours will the population reach 250, 000 ?
Data were collected from a group of senior citizens, ages 65 and older, about their age and pet ownership. The results were used to calculate the model ŷ = –0.24x + 18.48, where x represents the age in years and ŷ represents the predicted number of pets owned. If a 45-year-old is predicted to have more than 7 pets, would that be a reasonable use of the model? This is not reasonable because the prediction is based on someone outside the original population. This is reasonable because the model is based on real data. This is not reasonable because it is impossible to own more than 7 pets. This is reasonable because the prediction is based on someone within the original population.
An endangered species has a population of 1,000,000 alive right now. This is only 0.3% of its peak population number. What is the peak population number of the species?
The annual number of burglaries in a town rose by 50% in 2012 and fell by 10% in 2013. Hence the total number of burglaries increased by 40% over the two year period. What is the mistaken assumption here? Why is that assumption incorrect?
Show that ln11 + e2x 2 = 2x + ln11 + e-2x2.
in 2000, 31% of US adults viewed a college education as essential for success. for the period from 2000 throught 2010, this percentage increased by approximately 2.4 each year. the percentage of US adults who viewed the college education as essential for success x years after the 2000 can be represented by --------------.
Data were collected from a group of senior citizens, ages 65 and older, about their age and pet ownership. The results were used to calculate the model ŷ = –0.24x + 18.48, where x represents the age in years and ŷ represents the predicted number of pets owned. If a 25-year-old is predicted to have more than 12 pets, would that be a reasonable use of the model? This is reasonable because the prediction is based on someone within the original population. This is not reasonable because the prediction is based on someone outside the original population. This is reasonable because the model is based on real data. This is not reasonable because it is impossible to own more than 12 pets.
express ln 3√4 in terms of ln 2 and/or ln 3
Company XYZ needs to predict the sales for each season for coming year - Season 1, 2 & 3. The foresight is that the total annual sales for 2022 is Php 6,109.00. Find the sales for each season given that Season 2 is 20% higher than Season 1 and Season 3 on the other hand is not dependent to any seasons. Show formulas.