Isabella uses one-foot cubical blocks to build a rectangular fort that is 12 feet long, 10 feet wide, and 5 feet high. The floor
and the four walls are all one foot thick. How many blocks does the fort contain?
1 answer:
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Answer:
B. x^2
Step-by-step explanation:
If m = x/y and
n = 1/xy
then
m/n = (x/y)/(1/xy)
You can simplify this complex fraction (fraction over a fraction) with the method Keep-Change-Flip. It works!
KEEP x/y
CHANGE ÷ to ×
FLIP 1/xy over to be xy/1
See image.
x/y • xy/1
= x^2
