The answer is the 3rd question
D is the answer to your question
Answer:
yes
Step-by-step explanation:
because when there is a negative sign before the number, it means that the number being shown is below zero, so yes -8.4 degrees celsius is below zero degrees celsius.
<h3>
Answer: 9V</h3>
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Reason:
The volume expression of a cone with radius r and height h is

Let's plug in the given height h = 12 and we'd get

This is the volume of the first cone. We're told the first cone has a volume of V, so we can say 
We can't find the actual numeric volume because we don't know what value replaces r. So we leave it as is.
The second cone has the same height (h = 12) but the radius is now 3 times in size. Instead of r, we use 3r
Replace every copy of r with 3r. Then simplify

The radius tripled which results in a volume that's 9 times bigger.
I’m not really sure what you mean but this question bc the r is the radius