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Gnesinka [82]
3 years ago
10

Can someone help me on this ? its Algebra 1 on exponents

Mathematics
1 answer:
Svetradugi [14.3K]3 years ago
3 0
The volume of a rectangular prism is its length times width times height, or algebraically, V=lwh. 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 l=x, w= \frac{x}{2},h= \frac{x}{3} into the formula for volume. You get (x)( \frac{x}{2})( \frac{x}{3} ), and you multiply these factors together. As you would with ordinary fractions, multiply the numerators and denominators across. You get \frac{(x)(x)(x)}{(1)(2)(3)} =  \frac{x^3}{6}. It seems that the book wants you to simplify by bringing the 6 up to the denominator. Recall the rule x^{-n}= \frac{1}{x^n}, if n is non-negative. The opposite applies so that \frac{1}{6} = 6^{-1}. For your final answer, you write 6^{-1}x^3. This corresponds to answer choice B.
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