3 years ago

A student's cost for last semester at her community college was $2400. She spent $480 of that on books. What percent of

Mathematics

1 answer:

kakasveta [241]3 years ago

4 0

Answer:

20%

Step-by-step explanation:

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What is the area of a rectangle with a length of 3 cm and width of 4.5 cm

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13.5 because 4.5 times 3 is 13.5

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3 years ago

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

erma4kov [3.2K]

<h3>Answer:</h3>

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

<h3>Explanation:</h3>

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