/*! 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. 390 For the equation -y+20=y聽: (a) ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 9: Q. 390 (page 1108)

For the equation -y+20=y:

(a) Is y=4a solution?

(b) Is y=-5asolution?

Short Answer

Expert verified

Part (a) : The valuey=4is a solution and
Part (b) : y=-5is not a solution to the equation

Step by step solution

01

Part (a) Step 1: Given information

Given the equation-y+20=y

02

Part (b) Step 2: Substituting and checking

Checking, we get

-4+20=416=44=4

Its true so it is a solution

03

Part (b) Step 1: Given information

Given equation-y+20=y

04

Part (b) Step 2: Substituting and checking

Checking, we get

-5+20=-515=-5

It is not true so it is not a solution

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 91影视!

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

Try It.

Solve: y鈭�3+2=4y+2

Accident investigation: An accident investigator measured the skid marks of one of the vehicles involved in an accident. The length of the skid marks was 175 feet. Use the formula s=24dto find the speed of the vehicle before the brakes were applied. Round your answer to the nearest tenth.

Explain why an equation of the form x+1=0has no solution.

In the following exercises, solve:

37y+1-10=8.

In the following exercises, solve.

a+1=a+5
See all solutions

Recommended explanations on Math Textbooks

Logic and Functions

Read Explanation

Mechanics Maths

Read Explanation

Discrete Mathematics

Read Explanation

Theoretical and Mathematical Physics

Read Explanation

Calculus

Read Explanation

Probability and Statistics

Read Explanation
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.