Mathematics
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OpenStudy (anonymous):
Which property justifies that 4*37*25=4*25*37
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jimthompson5910 (jim_thompson5910):
Hint:
which property states that
x * y = y * x
??
OpenStudy (anonymous):
umm identity
jimthompson5910 (jim_thompson5910):
no the identity properties are
x + 0 = x
0 + x = x
x * 1 = x
1 * x = x
jimthompson5910 (jim_thompson5910):
basically, doing some operation to x, doesn't change x
OpenStudy (anonymous):
oh is it associative
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jimthompson5910 (jim_thompson5910):
no that says that if you have 3 numbers x, y and z, then
x + (y+z) = (x+y)+z
x * (y*z) = (x*y)*z
jimthompson5910 (jim_thompson5910):
you're re-associating and moving around parenthesis
OpenStudy (anonymous):
communtive
jimthompson5910 (jim_thompson5910):
commutative property of ____
OpenStudy (anonymous):
so it has to be inverse then
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jimthompson5910 (jim_thompson5910):
commutative property of inverse
no such property
jimthompson5910 (jim_thompson5910):
is it
commutative property of addition
or
commutative property of multiplication
OpenStudy (anonymous):
haha of i thought communtive was wrong
jimthompson5910 (jim_thompson5910):
oh, no commutative property is (partially) correct
jimthompson5910 (jim_thompson5910):
just not complete since there are 2 properties that are commutative
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OpenStudy (anonymous):
commutative property of multiplication
jimthompson5910 (jim_thompson5910):
good
OpenStudy (anonymous):
thank you
jimthompson5910 (jim_thompson5910):
yw