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Aliun [14]
3 years ago
5

If f(1)=1, what is f(3)?​

Mathematics
2 answers:
Marina CMI [18]3 years ago
8 0
F(1)= 1 then it would be the same concept in f(3). so f(3)= 3
EleoNora [17]3 years ago
3 0
F(3) is 3 simple question
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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
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\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}\\
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\bf f=k\sqrt{t}\quad \textit{we also know that }
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t=8
\end{cases}\implies 300=k\sqrt{8}
\\\\\\
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\\\\\\
\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}}\\\\
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5 0
3 years ago
Read 2 more answers
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3 0
3 years ago
You are biking at a speed of 18 miles per hour. You are 3 miles behind your friend who is biking at a speed of
labwork [276]

Answer:

12t -3 = 18t

Step-by-step explanation:

Let

d = your friends distance in miles

t = time in hrs

Your equation:

d - 3 = 18t (1)

Because you are 3 miles behind your friend

Your Friend's equation:

d = 12t (2)

To find the amount of time t it takes for you to catch up with your friend,

Substitute (2) into (1)

d - 3 = 18t

12t - 3 = 18t

Equation to find the amount of time t it takes for you to catch up to your friend is 12t - 3 = 18t

Solving the equation

12t - 3 = 18t

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3 0
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