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3 years ago

12

peter uses unit cubes to built a figure in the shape of the letter x. what is tej fewest unit cubes that oeter can use to build

the figure?

1 answer:

LiRa [457]3 years ago

5 0

The fewest unit cubes he can use is 4

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Which of the following is equivalent to x^-1/2<br><br>1) -1/2x <br>2) -√x<br>3) 1/√x<br>4) -1/2x

irina [24]

Answer:

Option (3) is correct.

Step-by-step explanation:

We need to find the expression that is equivalent to $x^{-1/2}$ .

The property is : $x^{-a}=\dfrac{1}{x^a}$

Here, a = 1/2

So,

$x^{-1/2}=\dfrac{1}{x^{1/2}}$

We know that, $x^{1/2}=\sqrt{x}$

$\dfrac{1}{x^{1/2}}=\dfrac{1}{\sqrt{x} }$

So, $x^{-1/2}$ is equivalent to $\dfrac{1}{\sqrt{x} }$

Hence, the correct option is (3).

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