-12 would fall into integers and real numbers.
-12 is not a natural number because it is negative.
-12 is not irrational because it can be transferred into a fraction,
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Its to scale. so every inch is 1.5 feet according to the statement of 18 inches being equal to 27 feet. In that case, the answer is C. because 20X1.5 is 30
Answer:the answer is 90 u welcome text me back if wrong armstrongtamarion
Step-by-step explanation:
None because it is impossible for any triangle to have more than one obtuse angle.