/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q. 25 Graph each system of linear ineq... [FREE SOLUTION] | 91Ó°ÊÓ

91Ó°ÊÓ

Graph each system of linear inequalities by hand. Verify your results using a graphing utility.

2x-y≤43x+2y≥-6

Short Answer

Expert verified

The required solution is

Step by step solution

01

Step 1. Given Information

We are given a system of linear inequalities 2x-y≤43x+2y≥-6and we need to find the solution region of the inequalities.

02

Step 2. Graphing the inequalities  

First, we plot the equation of the line 2x-y=4.

The graph of the inequality 2x-y≤4is a solid line and so is part of the graph of the inequality. Since 0,0satisfies the inequality, the graph consists of the portion towards the origin. The shaded portion above the line represents the inequality. The graph is


Again, we plot the equation of the line localid="1646896539952" 3x+2y=-6.

The graph of the inequality 3x+2y≥-6is a solid line and so is part of the graph of the inequality. Since 0,0satisfies the inequality, the graph consists of the portion towards the origin. The shaded portion above the line represents the inequality. The graph is

03

Step 3. Finding the solution 

The intersection of the shaded regions of the two inequalities gives the result. The required solution is

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91Ó°ÊÓ!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

In Problems 57-64, use a graphing utility to solve each system of equations. Express the solution(s) rounded to two decimal places.

role="math" localid="1646895844686" y=x23y=e-x

If Bruce and Bryce work together for 1hour and 20minutes, they will finish a certain job. If Bryce and Marty work together for 1hour and 36minutes, the same job can be finished. If Marty and Bruce work together, they can complete this job in 2hours and 40 minutes. How long will it take each of them working alone to finish the job?

Cryptography; One method of encryption is to use a matrix to encrypt the message and then use the corresponding inverse matrix to decode the message. The encrypted matrix, E, is obtained by multiplying the message matrix, M, by a key matrix, K. The original message can be retrieved by multiplying the encrypted matrix by the inverse of the key matrix. That is, E=M·Kand M=E·K-1.

(a) Given the key matrix K=211110111, find its inverse, K-1. [Note: This key matrix is known as the Q23Fibonacci encryption matrix.]

(b) Use your result from part (a) to decode the encrypted matrix E=473433443627474120

(c) Each entry in your result for part (b) represents the position of a letter in the English alphabet (A=1,B=2,C=3,and so on). What is the original message?

A doctor’s prescription calls for a daily intake containing 40 milligrams (mg) of vitamin C and 30 mg of vitamin D. Your pharmacy stocks two liquids that can be used: one contains 20% vitamin C and 30% vitamin D, the other 40% vitamin C and 20% vitamin D. How many milligrams of each compound should be mixed to fill the prescription?

The sum of two numbers is 7, and the difference of their

squares is 21. Find the numbers.

See all solutions

Recommended explanations on Math Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.