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Jlenok [28]
3 years ago
9

The density of copper is 9.86g\cm³ work out the solid copper cuboid in kg

Mathematics
1 answer:
EleoNora [17]3 years ago
3 0

Answer:

Step-by-step explanation:

Density of copper = 9.86 g / cm^3 = 9860 kg / m^3

= 9.86 x 1 / 1000 kg / cm^3 = 9.86 / 1000 Kg / cm^3

= 0.00986 kg / cm^3

= 9.86 x 1 / 1000 kg (1 / 100 m)^3

= 9.86 x 1000000 / 1000 kg / cm^3

Mass "m" = 9860 kg / m^3

thus the mass of copper in solid form is m =  9860 kg / m^3

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Step 1 ) Move all terms right side of the equation.

\displaystyle\ x^{2} + 6x = -18

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Step 2 ) Apply quadratic formula. (Note: There are 2 solutions)

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Since the options only provide one of the answer we found, the answer is...

\displaystyle\ x = -3 - 3i

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