Plz Help !!!

Mathematics

1 answer:

Morgarella [4.7K]1 year ago

5 0

Answer:

3962.96 is the radius

Step-by-step explanation:

r=C

2π=24900

2·π≈3962.95808

Hope this helps. I'm really sorry. We all struggling out here. We can do it!!

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Write a rule for the nth term of the sequence.

Helga [31]

Answer:

The rule for given sequence is: a_n = -27+16n

And the 100th term is: 1573

Step-by-step explanation:

Given sequence is:

-11, 5, 21, 37, 53, ...

Here

$a_1 = -11\\a_2 = 5\\a_3 = 21\\a_4 = 37$

First of all, we have to find if this is an arithmetic sequence

For that purpose, the common difference has to be found. Common difference, denoted by d, is the difference between consecutive terms of an arithmetic sequence

So,

$d = a_2 -a_1 = 5-(-11) = 5+11 = 16\\d = a_3 -a_2 = 21-5 = 16\\d = a_4-a_3 = 37-21 = 16$

As the common difference is same, the sequence is an arithmetic sequence

General rule for arithmetic sequence is:

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

Putting values

$a_n = -11+(n-1)(16)\\a_n = -11+16n-16\\a_n = -27+16n$

For 100th term,

Putting n=100

$a_{100} = -27+16(100)\\a_{100} = -27+1600 = 1573$

Hence,

The rule for given sequence is: a_n = -27+16n

And the 100th term is: 1573

6 0

2 years ago

A person is watching a boat from the top of a lighthouse. The boat is approaching the lighthouse directly. When first noticed th

dexar [7]

$\tan(51^o 33')= \frac{200}{base1}$
<span>
base1= 158.802

</span> $\tan(18^o 33')= \frac{200}{base2}$
<span>
base2=596.008

the distance travelled = 596.008 - 158.802 = 438 m</span>