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Mathematics 15 Online
OpenStudy (anonymous):

help

OpenStudy (anonymous):

What property is shown? –8 + (–15) = (–15) + (–8) A. commutative property B. associative property C. opposite of a sum property D. distributive property

OpenStudy (skullpatrol):

Any ideas?

OpenStudy (anonymous):

i dont get thease

OpenStudy (skullpatrol):

You don't "get" them because you are not attaching the meaning of the property to the name :-)

OpenStudy (anonymous):

are u gana help me under stand

OpenStudy (skullpatrol):

Sure, let's start with the meaning of the word "commute"? What does it mean?

OpenStudy (skullpatrol):

Are you still there @braden_foster_1 ?

OpenStudy (skullpatrol):

If you are "commuting" to work, what are you doing?

OpenStudy (anonymous):

a property of a mathmatical operation whose result results is insensitive to order of its arguments

OpenStudy (skullpatrol):

Yes, that is the "textbook" answer, which you ultimately need to memorize; but let's attach some meaning to the word "commute" first before we memorize, since it will make our memorization easier, right?

OpenStudy (skullpatrol):

@braden_foster_1 If you are "commuting" to work, what are you doing?

OpenStudy (anonymous):

COMMUTATIVE PROPERTY---It does not matter which number is first when you write the problem. examples...5+3=3+5, 9+7=7+9 or a+b = b+a or ab = ba ASSOCIATIVE PROPERTY---Involves 3 or more numbers, two numbers are in parenthesis(they are "associated" together). examples...(2+5) +4=11, 2+(5+4) = 11...remember,always do parenthesis first, order of operations. a+(b+c)=(a+b)+c or a(bc) = (ab)c DISTRIBUTIVE PROPERTY---The sum of two numbers is equal to the sum of each addend times a third number. examples..4 x (.6+3)= 4 x 6 + 4 x 3, 5x (1+2)= 5 x 1+ 5 x 2, a(b+c) = ab +ac or (b+c)a=ba + ca. IDENTITY PROPERTIES--- 1. addition--additive identity is 0. a+0=0+a = a 2. multiplication--multiplication identity is 1. a(1)=1(a)=a INVERSE PROPERTIES-- 1.additive inverse(or negative)...a + (-a) = 0 2. multiplication inverse (or reciprocal)...a (1/a)= (1/a)a = 1

OpenStudy (anonymous):

those are all i know

OpenStudy (skullpatrol):

Are you going to answer my question?

OpenStudy (anonymous):

i need hlp

OpenStudy (skullpatrol):

Yes or no?

OpenStudy (anonymous):

yes

OpenStudy (skullpatrol):

I'm waiting...

OpenStudy (anonymous):

i said yes

OpenStudy (skullpatrol):

Answer my question please: If you are "commuting" to work, what are you doing?

OpenStudy (anonymous):

im doing workim just slo

OpenStudy (skullpatrol):

No problem. Think about what the word "commute" means. If you have no idea: look it up in a dictionary :-)

OpenStudy (anonymous):

gtg sorry my mom said

OpenStudy (skullpatrol):

Ok bye :-)

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