Answer:
x = 5
Step-by-step explanation:
Applying Pythagoras' identity to the right triangle
x² + 12² = 13²
x² + 144 = 169 ( subtract 144 from both sides )
x² = 25 ( take the square root of both sides )
x = = 5
The difference of eight and twice a number
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Consider the given function:
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Solution:
We have,
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Substituting , we get
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Now,
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