The volume of a rectangular prism is its length times width times height, or algebraically, 
. You may be used to computing volume with numbers, but remember, a variable is a stand-in for a number. So you can solve this in the same way. Substitute 
into the formula for volume. You get 
, and you multiply these factors together. As you would with ordinary fractions, multiply the numerators and denominators across. You get 
. It seems that the book wants you to simplify by bringing the 6 up to the denominator. Recall the rule 
, if n is non-negative. The opposite applies so that 
. For your final answer, you write 
. This corresponds to answer choice B.
Debra runs each lap in 8 minutes. She will run more than 40 minutes today. What are the possible numbers of laps she will run to
2 answers:
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Answer:
View picture for answer.
Step-by-step explanation:
Given:
The given value is .
To find:
The multiplicative inverse of .
Solution:
We know that is the multiplicative interval of
if
.
Let be the multiplicative inverse of the given value
. Then,
Divide both sides by .
Therefore, the multiplicative inverse of is
. Hence the correct option is A.