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dedylja [7]
3 years ago
6

Find the missing number. n − 9.01 = 3.86 n = ?

Mathematics
2 answers:
PIT_PIT [208]3 years ago
4 0

Answer & Step-by-step explanation:

n - 9.01 = 3.86

Add 9.01 to both sides of the equation.

n = 12.87

So, the value of n is 12.87

aleksandr82 [10.1K]3 years ago
3 0
I think the missing number should be
12.87
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==>   3 = <em>a</em> (<em>x</em> + 1) + <em>b</em> (<em>x</em> - 1)

==>   3 = (<em>a</em> + <em>b</em>) <em>x</em> + <em>a</em> - <em>b</em>

==>   <em>a</em> + <em>b</em> = 3 and <em>a</em> - <em>b</em> = 0

==>   <em>a</em> = <em>b</em>

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3/(<em>x</em> ² - 1) = 2/(3(<em>x</em> - 1)) + 2/(3(<em>x</em> + 1))

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