3 years ago

Bess practices trumpet 1/2 hr on Monday and 1 3/5 hr on Wednesday.

Mathematics

2 answers:

svetlana [45]3 years ago

8 0

She practice for 2.1 or 2 1/10

Dennis_Churaev [7]3 years ago

5 0

She practiced for 2.1 hours total

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$\bf \textit{perimeter of a rectangle}\\\\
P=2(L+w)~~
\begin{cases}
L=length\\
w=width\\[-0.5em]
\hrulefill\\
L=\stackrel{twice~the~width}{2w}\\
P=48
\end{cases}\implies 48=2(2w+w)\implies \cfrac{48}{2}=3w
\\\\\\
24=3w\implies \cfrac{24}{3}=w\implies \boxed{8=w}
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
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3 years ago

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Lera25 [3.4K]

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