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pychu [463]
3 years ago
13

Use grouping symbols to make the following equation true. 5³ ÷ 5+20=5

Mathematics
1 answer:
Alona [7]3 years ago
3 0

In this question,We have to group the given expression to get 5 as the final answer .

5^3 \div 5+20

Here we put 5 +20 in parenthesis, that is

5^3 \div (5+20)

And we do the required operations, that is

=125 \div 25 =5

And we get 5.

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Which sentence is NOT a geometric progression?
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<u>c) 3, 6, 9 12</u>  is NOT a geometric progression

<h3>Further explanation </h3>

Geometry sequences are series of numbers that have a constant ratio

or can be interpreted:

Each number is obtained by multiplying the previous number by a constant

The sequence can be:

a, ar, ar², ar³, ... etc.

Can be formulated

\large {\boxed {\bold x_n = ar ^ {n-1}}}

where:

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So we have to see the series has the same ratio or not

a. \dfrac{5}{1}=\dfrac{25}{5}=5\to \rm geometric\:progression

b. \dfrac{8}{4}=\dfrac{16}{8}=2\to \rm geometric\:progression

c.\dfrac{6}{3}\neq \dfrac{9}{6}\to \rm not\:geometric\:progression

d. \dfrac{6}{2}=\dfrac{18}{6}=3\to \rm geometric\:progression

<h3>Learn more </h3>

a geometric sequence

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the formula for a finite geometric series

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Keywords : a geometric sequence, the first term, the common ratio

7 0
3 years ago
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Answer:

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2 years ago
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Answer:

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