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Mila [183]
3 years ago
9

U need to help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeev plz

Mathematics
1 answer:
Zolol [24]3 years ago
5 0

Answer:

a=$12

b=$12

c=$13

d=$12

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If a train traveled at 50 meters within 120 seconds, what is its speed?
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Answer:

v = 0.416 m/s

Step-by-step explanation:

Give that,

Distance covered by a train, d = 50 m

Time taken, t = 120 s

We need to find the speed of a train. The formula for speed of an object is equal to the total distance covered divided by total time taken. It can be given by :

v=\dfrac{d}{t}\\\\v=\dfrac{50\ m}{120\ s}\\\\v=0.416\ m/s

So, the speed of a train is 0.416 m/s.

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3 years ago
Given that an intercepted arc has length 6pi inches and a central angle is pi/3, find the radius
MA_775_DIABLO [31]
\bf \textit{arc's length}\\\\
s=r\theta \quad 
\begin{cases}
r=radius\\
\theta =angle~in\\
\qquad radians\\
------\\
s=6\pi \\
\theta =\frac{\pi }{3}
\end{cases}\implies 6\pi =r\left( \frac{\pi }{3} \right)\implies \cfrac{6\pi }{\frac{\pi }{3}}=r
\\\\\\
\cfrac{6\pi }{1}\cdot \cfrac{3}{\pi }=r\implies 18=r
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3 years ago
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