4 years ago

Convert the decimal expansion 0.1777 into a rational number.

Mathematics

2 answers:

Alex17521 [72]4 years ago

8 0

1777/10000. might simplify

Maslowich4 years ago

7 0

Answer:

IT'S C

Step-by-step explanation:

Since the repeating segment length is 1, multiply by 101 .

10x = 1.7777...

- x = 0.1777...

9x = 1.6

then,

9x = 1.6

x =

1.6

x =

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Read 2 more answers

Write a function rule to represent the sequence 0.3,0.9,1.5,2.1<br> PLease help

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The rule for sequence is:

$a_n=0.3+(n-1)(0.6)$

Step-by-step explanation:

To write the function rule, we have to check first whether it is an arithmetic sequence or geometric sequence

We have to find the common difference first. Common difference is the difference between two consecutive terms of a arithmetic sequence.

So,

Here

$a_1=0.3\\a_2=0.9\\a_3=1.5\\a_4=2.1\\d=a_2-a_1=0.9-0.3=0.6\\a_3-a_2=1.5-0.9=0.6$

The common difference is same so the sequence is an arithmetic sequence.

The explicit formula for an arithmetic sequence is:

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

Putting the values of d and a_1 we get,

$a_n=0.3+(n-1)(0.6)$

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The rule for sequence is:

$a_n=0.3+(n-1)(0.6)$

Keywords: Functions Rule, Arithmetic sequence

Learn more about arithmetic sequence at:

#LearnwithBrainly

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