SOLUTION: since 2<4 what happens when we multiply both sides by -2 will we get -4<-8 which is no longer true how do we make it true
Algebra.Com
Question 382449: since 2<4 what happens when we multiply both sides by -2 will we get -4<-8 which is no longer true how do we make it true
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Rule:
Whenever you multiply an inequality by a negative number, reverse the sense of the inequality. That is 
or 
becomes 
or 
or vice versa.
The reason that the rule doesn't say "Whenever you multiply or divide...(and doesn't need to) is left as an exercise for the student.
John
My calculator said it, I believe it, that settles it
RELATED QUESTIONS
In your own words, explain in detail why we can determine which of two fractions is... (answered by eperette)
We are doing Jacob's Algebra at home.
We are on Lesson 3 in Chapter 15
Set III Question (answered by ichudov)
How do I start to solve this problem? I have tried to solve but I am so confused.... (answered by mducky2)
I am trying to understand if the equation I have done is anywhere near correct. I think... (answered by ReadingBoosters,MathTherapy)
if we multiply the number by 6 and subtract 1 the answer we get is the same as when we... (answered by TimothyLamb)
The solution of
sqrt(x+4)= x-2 ==> x=0 and x=5
x=5 is true since by substituting in... (answered by jsmallt9)
Find an equivalent fraction to (2/3) with a denominator equal to 9
To do so we need to... (answered by plover)
I need to solve for x on the following equations. I honestly don't know what to do.... (answered by fcabanski)
What is wrong with this arguement? Suppose x and y represent two real numbers, where x >... (answered by Nate)
