3 years ago

Write the first 3 terms of the sequence an=n+2

Mathematics

1 answer:

frutty [35]3 years ago

8 0

Answer:

Step-by-step explanation:

$a_n = n + 2$

$a_1 = 1 + 2 = 3\\a_2 = 2 + 2 = 4\\a_3 = 3 + 2 = 5$

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Austin takes 1 minute and 45 seconds to run three-quarters of a circular track. His rate of motion is π/ radians per second.

valentina_108 [34]

Length of circular track is:

L = 2*r*pi

He run 3/4 of it so length is:
L' = 3*2/4*r*pi = 3/2*r*pi

To calculate speed of his movement we use formula:
v = s/t where s = L' and t = 1 minute 45 seconds = 105 seconds

v = L'/t = $\frac{3*r*pi}{2*105}$

v = r* pi/70

If we take that r = 1 answer is $\pi /70$