You know from previous years that
ac/bd = a/b ⋅ c/d
and you know the converse is also true
a/b ⋅ c/d = ac/bd
That means you could solve
8/9⋅3/10 by either multiplying first and then simplify or you could simplify first and then multiply.
I find it works so much better to simplify first
8/9⋅3/10 = 4/15
6x/y3⋅y2/15 = 2x/5y where y ≠0
Which simplifies to
This textbook wants us to keep the factored form as our answers--> so let's continue to do that. In addition it states, " ...from now on, assume that the domains of the variables do not include values for which any denominator is ZERO. Therefore it will NOT be necessary to show the excluded [or restrictions] values of the variables."
I know everyone is jumping for joy!!
Rule of Exponents for a Power of a Quotient
(a/b)m = am/bm
(x/3)3 = x3/27
(-c/2)2⋅4/3c
you must do the exponent portion first!!
c2/4⋅(4/3c)
c/3
Find the volume of a cube if each edge has length 6n/7 in
You just need to cube each factor
(6n/7)3 = 216n3/343 inches cubed
If you traveled for 7t/60 hours at 80r/9 mi/h, how far have you gone?
Just multiply
7t/60⋅80r/9
but simplify first and you get
28rt/27 miles
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