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r-ruslan [8.4K]
3 years ago
9

4) A rectangular court is 4 feet wide. The length is twice as long as the width. What is the area of the rectangular court?

Mathematics
1 answer:
inn [45]3 years ago
8 0

Answer:

B: 32

Step-by-step explanation:

Because the Length is twice the width, and the width is 4, that means the length is 8. Area= length×width, so the area is 4×8 which is 32

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the pitch, or frequency, of a vibrating string varies directly with the square root of the tension. if a string vibrates at a fr
Naily [24]
\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad  y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad  variation
\end{array}\\\\
-------------------------------\\\\
\begin{array}{llll}
\stackrel{frequency}{f}\textit{ of a vibrating string varies directly}\\
\qquad \qquad \textit{with the square root of the tension }\stackrel{tension}{t}
\end{array}

\bf f=k\sqrt{t}\quad \textit{we also know that }
\begin{cases}
f=300\\
t=8
\end{cases}\implies 300=k\sqrt{8}
\\\\\\
\cfrac{300}{\sqrt{8}}=k\implies \cfrac{300}{\sqrt{2^2\cdot 2}}=k\implies \cfrac{300}{2\sqrt{2}}=k\implies \cfrac{150}{\sqrt{2}}=k
\\\\\\
\textit{and we can \underline{rationalize} it to }\cfrac{150\sqrt{2}}{2}\implies 75\sqrt{2}=k

\bf thus\qquad f=\stackrel{k}{75\sqrt{2}}\sqrt{t}\implies \boxed{f=75\sqrt{2t}}\\\\
-------------------------------\\\\
\textit{now, when t = 72, what is \underline{f}?}\qquad f=75\sqrt{2(72)}
5 0
3 years ago
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Which of the following results in the difference of two squares? (answer choices below)
Allushta [10]

Answer:

A

Step-by-step explanation:

Use signs inside the brackets as a guide

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6 0
2 years ago
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GaryK [48]

Answer:

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Step-by-step explanation:

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Show work 1 3/4+7/8+1 1/2
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The answer is 65/8

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in decimal form its 8.125, hope this helps
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Which graph represents y > 2x - 1?
GrogVix [38]
I believe b because it would be dotted and has a slope of 2 or 2/1
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2 years ago
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