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2 years ago

Please help, greatly appreciated

Mathematics

1 answer:

fredd [130]2 years ago

4 0

Take a look at the right triangle. The vertical leg has length 12 cm because the square is 12 cm on a side.

According to the Pyth. Thm., x^2 + (12 cm)^2 = (20 cm)^2. Then:

x^2 = 400 cm^2 - 144 cm^2, or x^2 = 56

Then the unknown side length, x, is +√56 = +7√8 = +14√2.

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Answer:

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Range: all real numbers

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all real numbers

Interval notation: (-∞,∞)

all negative numbers and positive numbers (all real numbers)

Set-Builder Notation: {x | x ∈ R }

Range:

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