Linear Programming Questions and Answers

Sometimes linear systems are expressed in three variables. These can also be solved using linear combinations, but you need three equations to solve for all three variables. In this problem, there are three variables. Ed decides to include more fruit in his diet. He goes to the grocery store over the weekend and buys 6 apples, 6 oranges, and 6 avocados. The total cost is $19.50. Ed finishes the apples very quickly, and has some leftover avocado. The following weekend he buys 12 apples, 2 oranges, and 1 avocado. This time he pays just $9.50. The following week, Ed reads an article on the benefits of avocado, so over the weekend he buys 5 avocados along with 2 apples and 4 oranges. His total this time is $14. Assume that Ed pays a unit price rather than a price per pound for the apples, oranges, and avocados.

The prices of a random sample of 24 new motorcycles have a sample standard deviation of $3626. Assume the sample is from a normally distributed population. Construct a confidence interval for the population variance σ² and the population standard deviation 6. Use a 90% level of confidence. Interpret the results. What is the confidence interval for the population variance σ²? (Round to the nearest integer as needed.)

Solve the system analytically. 3x + 3y - 9z = 9 2x+y-z = 7 -x-y+ 3z=2 Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. A. There is one solution. The solution set is B. There are infinitely many solutions. The solution set is ,{(z)}, where z is any real number. C. The solution set is Ø.

1/ 100 people seated at different tables in a Mexican restaurant were asked if their party had ordered any of the following items: margaritas, chili con queso, or quesadillas 23 people had ordered none of these items. 11 people had ordered all three of these items. 29 people had ordered chili con queso or quesadillas but did not order margaritas. 41 people had ordered quesadillas. 46 people had ordered at least two of these items. 13 people had ordered margaritas and quesadillas but had not ordered chili con queso. 26 people had ordered margaritas and chili con queso.

Suppose a country has a population of 30 million and projects a growth rate of 3% per year for the next 20 years. Find a formula for the population of the country after t years, where P is measured in millions of people. P(t) = What will the population of this country (in millions of people) be in 5 years? (Round your answer to two decimal places.)

A family has two cars. During one particular week, the first car consumed 40 gallons of gas and the second consumed 30 gallons of gas. The two cars drove a combined total of 2600 miles, and the sum of their fuel efficiencies was 75 miles per gallon. What were the fuel efficiencies of each of the cars that week?

Suppose in one year, total revenues from digital sales of pop/rock, tropical (salsa/merengue/cumbia/bachata), and urban (reggaeton) Latin music in a certain country amounted to $21 million. Pop/rock music brought in twice as much as the other two categories combined and $11 million more than tropical music. How much revenue was earned from digital sales in each of the three categories? pop/rock music $ million tropical music $ million urban Latin music $ million

The sum of two numbers is 32. One number is 3 times as large as the other. What are the numbers?

5 DR Solve the linear programming problem using the simplex method. Maximize z=2x, +5x₂ subject to 5Xq+xy 550 5x₁ + 2x₂ ≤70 X₁ + X₂ ≤60 X₁, X₂ ≥ 0. ***** Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. The maximum is z = when X₁ = X2=S₁ = S₂ = OB. There is no maximum solution for this linear programming problem.

Sally likes to go buy groceries from Walmart or Shoprite In Walmart, two pounds of tea and three pounds of coffee cost $19.00. In Shoprite three boxes of milk and four cans of yoghurt cost $26.50. Write the linear equations related to the details given, one equation for each stores. Write an equation to represent the information given in the first sentence. define the variables you use Equation: Explain how you created the equation. Hint: A linear equation is in standard form if it is in the form: ar+by = c.

Systolic blood pressure is the higher number in a blood pressure reading. It is measured as the heart muscle contracts. Heather was with her grandfather when he had his blood pressure checked. The nurse told him that the upper limit of his systolic blood pressure is equal to half his age increased by 110. a.a is the age in years, and p is the systolic blood pressure in millimeters of mercury (mmHg). Write an inequality to represent this situation. b.Heather's grandfather is 76 years old. What is normal for his systolic blood pressure?

A sausage company makes two different kinds of hot dogs, regular and all-beef. Each pound of all-beef hot dogs requires 0.75 lb of beef and 0.2 lb of spices, and each pound of regular hot dogs requires 0.18 lb of beef, 0.3 lb of pork, and 0.2 lb of spices. Suppliers can deliver at most 1020 lb of beef, at most 600 lb of pork, and at least 500 lb of spices. If the profit is $1.85 on each pound of all-beef hot dogs and $1.00 on each pound of regular hot dogs, how many pounds of each should be produced to obtain maximum profit? regular hot dogs 2000 all-beef hot dogs 880 What is the maximum profit? ✓lb lb

Kelly works two jobs. She usually works at a retail store for 7 hours during the day and is paid $24.36 per hour by the store. In the evening she works at a restaurant as a manager for 7 hours and is paid $22.01 per hour. How much does she make on average per hour for the day?

The test point (0, 0) is a representative point (Choose one) the line. Since (0, 0) satisfies the original inequality, then it and all other points (Choose one) above below the line are solutions. Shade (Choose one) the line.

Mia and her children went into a bakery where they sell cupcakes for $2.75 each and brownies for $1.25 each. Mia has $30 to spend and must buy at least 14 cupcakes and brownies altogether. If a represents the number of cupcakes purchased and y represents the number of brownies purchased, write and solve a system of inequalities graphically and determine one possible solution.

Josiah is taking his friends to the movies. Each ticket costs $10, and popcorn is $5 a bag. There is a $3 service fee for the entire purchase. He has $75. He buys 4 tickets, and wants to figure out the maximum number of bags of popcorn he can buy. If x= number of tickets and y= number of bags of popcorn, which of the following inequalities could you use to answer the problem? A. 10x+ 5y≤ 75 B. 10x+ 5y+3 ≤75 C. 10x+ 5y + 3 ≥75 D. x+y= 75

The area of a parking lot is 1710 square meters. A car requires 5 square meters and a bus requires 32 square meters of space. There can be at most 180 vehicles parked at one time. If the cost to park a car is $2.00 and a bus is $6.00, how many buses should be in the lot to maximize income? 34 021 14 30

A carpenter is building a rectangular table. He wants the perimeter of the tabletop to be no more than 28 feet. He also wants the length of the tabletop to be greater than or equal to the square of 2 feet less than its width. Create a system of inequalities to model the situation, where x represents the width of the tabletop and y represents the length of the tabletop. Then, use this system of inequalities to determine the viable solutions. A Part of the solution region includes a negative width; therefore, not all solutions are viable for the given situation. B. The entire solution region is viable. C. Part of the solution region includes a negative length; therefore, not all solutions are viable for the given situation. D. No part of the solution region is viable because the length and width cannot be negative.

A nursery sells fertilizer in 25-pound and 100-pound bags. If Juliet bought 13 bags of ferti- lizer for her landscaping business that contained 775 pounds of fertilizer, how many 100-pound bags did she buy? A) 5 B) 6 C) 7 D) 8