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06.06.2020 •
Mathematics
Silver has a density of 0.04 lb/cm^3. A standard silver bar has a volume of 642 cm^3. To the nearest pound, how much does 1 standard silver bar weigh?
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Ответ:
The weight of the mentioned silver bar is:
25.68 LbStep-by-step explanation:
Remember that the formula of density is:
Density = mass / volume.From this formula, you can clear the mass (because this is the valor you need to solve the exercise), so you will have:
Mass = density * volumeWith this last formula, you must replace the values given in the exercise:
Mass = density * volume Mass = 0.04 lb/cm^3 * 642 cm^3 Mass = 25.68 LbYou can check this value using the original formula of density and see if the density has the same valor of the exercise:
Density = mass / volume. Density = 25.68 Lb / 642 cm^3 Density = 0.04 Lb / cm^3Ответ:
B.![f\left(x\right)=\frac{x}{\left(x+4\right)\left(x-1\right)}](/tpl/images/0695/8427/82dca.png)
Step-by-step explanation:
I graphed this function on the graph below and it matched the graph you have.