3 years ago

What is the approximate circumference of a circle with a diameter of 500 kilometers ? use pi= 3.14.

1 answer:

7 0

The formula for a circumference is L=pi*diameter
So you have to replace d for 500:
L=circumference= 3.14*500 = 1570 kilometers, so answer is "b"

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Explicit formula for the sequence 29,20,11....... is $a_n=38-9n$

Given :

term of the sequence 29, 20, 11, ...

We need to find out the formula for the nth term of the given sequence

Lets find out whether the given sequence is arithmetic or geometric

In the given sequence , common difference is 9

$20-29=-9\\11-20=-9$

we can say difference =-9

General explicit formula

$a_n=a_1+(n-1)d$

where a1 is the first term

common difference d=-9

substitute the values

$a_n=a_1+(n-1)d\\a_n=29+(n-1)(-9)\\a_n=29-9n+9\\a_n=38-9n$

Explicit formula for the sequence 29,20,11....... is $a_n=38-9n$

Learn more : brainly.com/question/23243640

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