Mathematics: Which of the situations describes a temperature of –2 degrees? 2 degrees colder than 1 degree 2 degrees colder than 0 degrees 2 degrees warmer than 1 degree 2 degrees warmer than 0 degrees

Which of the situations describes a temperature of

robert7248

03.10.2022

$\frac{12 {z}^{ 3} {y}^{2} }{5 {x}^{ 2} }$

Step-by-step explanation:

We want to simplify:

$\frac{36 {x}^{ - 2} {y}^{2} }{15 {z}^{ - 3} }$

The trick is that when a negative index in the numerator comes to the denominator , it becomes positive.

The vice-versa is also true.

That is:

${a}^{ - n} = \frac{1}{ {a}^{ n} }$

and

${a}^{n} = \frac{1}{ {a}^{ - n} }$

We simplify to get:

$\frac{12 {z}^{ 3} {y}^{2} }{5 {x}^{ 2} }$

The last choice is correct.

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