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vfiekz [6]
3 years ago
10

A triangle has two sides of lengths 7 and 9. What value could the length of the third side be?

Mathematics
1 answer:
Dominik [7]3 years ago
5 0
X - length of the 3rd side

7+9>x \wedge 7+x>9 \wedge 9+x>7\\
x2 \wedge x>-2\\
x\in(2,16)
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Step-by-step explanation:

The formula for the gradient is given by:

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Thus if we have a gradient of 2.5 and two points (3, 8) and (x, 13), we can substitute this into the above formula for the gradient to get:

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2.5(x - 3) = 5 (Multiply both sides by (x - 3))

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2 |  2     -3       -3       2    

 

    <u>         4         2      -2          </u>

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Therefore, other factor of the given polynomial is (2x² + x - 1)

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