The answer is 2.25g/ml or 2.25 g/cm³
To do this, you need to know the formula of density. Density is the mass per unit of volume.

Where:
D = Density
M = Mass
V = Volume
You already have your mass, which is 45.0g, so what is your volume?
A graduated cylinder measures the volume of liquids. The procedure that was done here is called the displacement method. You can get an estimated volume of an irregular object by subtracting the initial volume from the final volume.
In this case, it would be:
<span>70.0mL - 50.0mL = 20.0 mL
</span>The volume is then 20.0mL.
Now that we have the volume we can solve for density.


Now take note that 1mL = 1cm³. So you can also express the answer as
2.25g/cm³.
Answer:

Step-by-step explanation:
We want to rewrite

in the form that would most easily help you identfiy the zeros of the function.
This the same as writing in factored form.

Factor by grouping:

Factor further to get:

21x-9+63=180
21x+54=180
21x=126
x=6
Answer:7 + 11x
Step-by-step explanation: you add your letter and number that were in the brackets the since 7 has no number the equation would end and become 7+11x