An acute angle is infact 90 degrees, therefore your answer is correct.
Answer:


A=5257.76
Step-by-step explanation:
Or use a calculator online.
9 times 9 = 81 6 times 6 =36 so 36 plus 18
Answer: I did a screen shot of the answer
Step-by-step explanation:
The domain of a step function is all real numbers.