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professor190 [17]
3 years ago
5

In a sample of 138 teenagers, 38 have never been to a live concert. Find the sample proportion for those who have never been to

a live concert.
Mathematics
1 answer:
Aleks04 [339]3 years ago
4 0
138 : 38
total : never went to a live concert
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Simplify the expression (2x − 9)(x + 6)
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<u>Answer:  </u>

Simplified form of given expression (2x – 9 )( x + 6 )  is 2 \mathrm{x}^{2}+3 \mathrm{x}-54

<u> Solution: </u>

We need to simplify following expression.

(2x – 9) ( x + 6)  

For sake of simplicity lets first assume 2x – 9 = A

So expression becomes A(x+6)

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On simplification, we get

=2 \mathrm{x}^{2}+3 \mathrm{x}-54

Hence simplified form of given expression (2x – 9 )( x + 6 )  is = 2 \mathrm{x}^{2}+3 \mathrm{x}-54

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Answer:

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A triangle has angle measures of 95° and 65° What is the measure of the third angle <br>​
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