Yes,this is a doozy.

 -3 (y - 5) = 15

Eliminate the parentheses on the left side:

 -3(y) -3(-5) = 15

 -3y + 15 = 15

Subtract 15 from each side:

 -3y = 0

Divide each side by -3 :

  y = 0

4 0

3 years ago

What’s the simplified form of the expression (T^4/10y^4)^-4

monitta

$\bf ~~~~~~~~~~~~\textit{negative exponents}
\\\\
a^{-n} \implies \cfrac{1}{a^n}
\qquad \qquad
\cfrac{1}{a^n}\implies a^{-n}
\qquad \qquad 
a^n\implies \cfrac{1}{a^{-n}}
\\\\
-------------------------------\\\\
\left( \cfrac{t^4}{10y^4} \right)^{-4}\implies \left( \cfrac{10y^4}{t^4} \right)^{4}\impliedby \textit{then we distribute the exponent}
\\\\\\
\left( \cfrac{10^4y^{4\cdot 4}}{t^{4\cdot 4}} \right)\implies \cfrac{10000y^{16}}{t^{16}}$

6 0

4 years ago

What is the reciprocal of 7 1/3?

Andrei [34K]

The reciprocal is -3/23.

7 0

3 years ago

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