What is the value of (–7 + 3i) + (2 – 6i)?
2 answers:
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Answer:
Step-by-step explanation:
Direct variation problems can easily be solved with proportions, namely:
and cross multiply to get
2y = 20 so
y = 10
The density of an object is obtained by taking the ratio of the mass of the object and its volume ;
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- However, the required formular for calculating the density of an object is :
- The mass of the object is measured in gram(g) or kilogram(kg)
- The volume of the object measured in Litre or any equivalent unit.
Therefore, the density of the object is the ratio of its mass and volume.
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