determine if the expression -a^3 is a polynomial or not. if it is a polynomial, state the type and degree of the polynomial
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The missing length of the right triangle is 13.41 inches.
<h3>How to find the side of a right triangle?</h3>A right angle triangle has one of its angles as 90 degrees.
The side length of a right triangle can be found using Pythagoras theorem.
Therefore,
c² = a² + b²
where
- c = hypotenuse
- a and b are the other legs.
Therefore,
x² = 18² - 12²
x² = 324 - 144
x² = 180
x = √180
x = 13.416407865
x = 13.41 inches
learn more on right triangle here: brainly.com/question/9183590
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