Answer:
It is the 1st answer.
Step-by-step explanation:
Answer:
(+5) and (-9)
Step-by-step explanation:
(+5) + (-9) = -4
(+5) × (-9) = -45
Answer:
Step-by-step explanation:
198 is not a perfect square
The fourth option is correct.
See the attached image. The red cylinder represents a washer formed by the described revolution. Its volume is

so when we integrate, we take

Answer:
-1?
Step-by-step explanation: