$\bf ~~~~~~~~~~~~\textit{negative exponents}
\\\\
a^{-n} \implies \cfrac{1}{a^n}
\qquad \qquad
\cfrac{1}{a^n}\implies a^{-n}
\qquad \qquad 
a^n\implies \cfrac{1}{a^{-n}}
\\\\
-------------------------------\\\\
\cfrac{3}{250}\qquad 
\begin{cases}
250=2\cdot 5\cdot 5\cdot 5\\
\qquad 2\cdot 5^3
\end{cases}\implies \cfrac{3}{5^3\cdot 2}\implies \cfrac{1}{5^3}\cdot \cfrac{3}{2}
\\\\\\
5^{-3}\cdot \cfrac{3}{2}\implies (5^{-1})^3\cdot \cfrac{3}{2}$

6 0

3 years ago

Gabrielle charged $5,700 at the local music store in order to purchase some equipment for her studio. The store offered no inter

Paul [167]

Answer:

684

Step-by-step explanation

8 0

3 years ago

(sin 10° + cos 10º)2 - 2 sin 80°cos 80°​

(sin 10° + cos 10º)2 - 2 sin 80°cos 80°