3 years ago

HELPPPP PLEASEEEEEEEEE

Mathematics

2 answers:

Artist 52 [7]3 years ago

6 0

Answer:

Step-by-step explanation:

Plug in 2 for x:

5-2 - 3

olganol [36]3 years ago

6 0

Answer:

Step-by-step explanation:

f(x)= 5 - x

f(2) = 5 - 2 = 3

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3(-4n - 9) = 21 plc solve

erma4kov [3.2K]

<h3>Answer:</h3>

$\huge{\boxed{n=-4}}$

<h3>Explanation:</h3>

$\begin{array}{cc}\begin{flushright}\text{Divide both sides of the equation by 3.}\end{flushright}&\begin{flushleft}-4n-9=7\end{flushleft}\\\begin{flushright}\text{Add 9 on both sides.}\end{flushright}&\begin{flushleft}-4n=16\end{flushleft}\\\begin{flushright}\text{Divide both sides by -4.}\end{flushrigh}&n=-4\end{array}$