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Talja [164]
3 years ago
7

An elevator goes up to the 16th floor. It then comes down 11 floors before going back up 15 floors. What floor is the elevator o

n now? A) 16th floor B) 18th floor C) 19th floor D) 20th floor
Mathematics
1 answer:
nevsk [136]3 years ago
4 0

Answer:

20 floor

Step-by-step explanation:

16 - 11 = 5       5 + 15 = 20

The elevator is on the 20th floor

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2 years ago
Simplify completely x^2+4x-45 / x^2+10x+9
S_A_V [24]

Answer: x - 5/x + 1

Step-by-step explanation:

This algebraic fraction

The task to be performed here is factorisation and simplification. Now going by the question,

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x² + 4x - 45 = x² + 9x - 5x - 45

= x(x + 9 ) - 5(x + 9 )

= ( x + 9 )(x - 5 ), don't forget this is the algebraic fraction's Numerator

The second part

x² + 10x + 9 = x² + x + 9x + 9

= x(x + 1) + 9( x + 1 )

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Now place the second expression which is the denominator under the first expression which is the numerator.

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x - 5/x + 1

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3 years ago
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