3 years ago

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Mathematics

2 answers:

vovangra [49]3 years ago

7 0

Answer:

134.4

Step-by-step explanation:

ICE Princess25 [194]3 years ago

4 0

The answer is $128.40

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Perimeter of rectangle is 48 inches area is 40 inches what are the length of the side

Aloiza [94]

$\bf \textit{perimeter of a rectangle}=p=side+side+side+side
\\\\
or\implies p=w+w+l+l\implies p=2w+2l
\\\\
p=2(w+l)\qquad 
\begin{cases}
w=width\\
l=length\\
------\\
p=48
\end{cases}\implies 40=2(w+l)\\\\
-----------------------------\\\\
\textit{area of it}=A=w\cdot l\qquad \begin{cases}
w=width\\
l=length\\
------\\
A=40
\end{cases}\implies 40=wl\\\\
-----------------------------\\\\$

$\bf thus\qquad 
\begin{cases}
40=2(w+l)\to \frac{40}{2}=w+l\to\frac{40}{2}-l=\boxed{w}
\\\\
40=wl\\
--------------\\
40=\left( \boxed{\frac{40}{2}-l} \right)\cdot l
\end{cases}$

solve for "l" to find its length

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3 years ago

What is a question without an = sign called

Norma-Jean [14]

Answer:

a question without an = sign is called an expression

Step-by-step explanation:

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3 years ago

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An architect built a scale model of a sports stadium using a scale in which 2 inches represents 30 feet. The height of the sport

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