The question is asking for mass/unit of volume.
Therefore the density of the material would be 6400kg/0.8m^3. You then want to change the bottom into a 1 by multiplying the top and bottom both by 10/8. You now have 8000kg/m^3, which is the solution.

$8000 \frac{kg}{m^3}$

7 0

3 years ago

Let g(x)x and h(x)<br> . Evaluate .

Maurinko [17]

9514 1404 393

Answer:

h(g(x)) = (1/5)x² +4/5

Step-by-step explanation:

$(h\circ g)(x)=h(g(x))=h(x^2+2) = \dfrac{(x^2+2)+2}{5}=\dfrac{x^2+4}{5}\\\\\boxed{(h\circ g)(x)=\dfrac{1}{5}x^2+\dfrac{4}{5}}$

3 0

3 years ago

How many permutations of the word spell are there

SOVA2 [1]

120 should be the answer

4 0

3 years ago