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3 years ago

Which of these numbers is a square number 4x10^5 9x10^4 4x10^3 9x10^3

Mathematics

2 answers:

larisa86 [58]3 years ago

7 0

Answer : The answer is 9*10^4

it will give you 90000

the square root of 90000 is 300

Hope it helps :)

Step-by-step explanation:

bazaltina [42]3 years ago

6 0

Answer:

 here 9*10^4 is a square number 

Step-by-step explanation:

9*10^4 = 90000

and it is a square of 300 

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What is the approximate percent decrease when a fish count goes down from 850 to 500? The percent decrease is approximately 40%.

Korolek [52]

Answer:

<h2>The percent decrease is approximately 40%. </h2>

Step-by-step explanation:

Step one:

given data

initial count of fish= 850

final count of fish= 500

Required

% decrease

Step two:

% decrease= final-initial/initial*100

substitute

% decrease= 850-500/850*100

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An arithmetic sequence has a1 = 22 and a8 = 43. Find a15.

brilliants [131]

The 15th term of the arithmetic sequence $a_{15} = 64$

Option B is correct

The nth term of an arithmetic sequence is given as:

$a_{n} = a + (n - 1)d$

The first value, a = 22

$a_8 = a+(8 - 1)d\\a_8 = a + 7d$

Since $a_8 = 43$

$43 = 22 + 7d\\7d = 43 - 22\\7d = 21\\d = \frac{21}{7}\\d = 3$

The common difference, d = 3

$a_{15}= a + (15-1)d\\a_{15} = a + 14d\\a_{15} = 22 + 14(3)\\a_{15} = 22 + 42\\a_{15} = 64$

The 15th term of the arithmetic sequence = 64

Learn more here: brainly.com/question/24072079

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2 years ago