Step-by-step explanation:
1 kg = 1000 g
4.5 kg = 4.5 × 1000
4500 g
So, h(t) is how far is Daniel's head from the surface of the water, namely the surface itself is when the height is nill, so his head is at the surface and the height of it is just 0, thus h(t) = 0. Namely, what is "t" when h(t) is 0?

clearly the seconds cannot be a negative unit, so is not -3/2.
The answer is $3,850 and have a very nice day
<span>Perimeter =2w+2L= 520.
We can solve this by understanding that the area is maximized by a square
Therefore L=w.
p=2w+2w=520=4w
w=130
Area
A=wL=130(130)= 16900 square yards</span>
<span>(y=mx+b) or (ax+by=c) hope this helped
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