kaylienguyen
29.01.2021 •
Mathematics
What is j in -2 + 9j = 10j + 8
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Ответ:
j = -10
Step-by-step explanation:
Get j by itself by subtracting 9j from both sides and subtracting 8 from both sides. You are left with -10 = 1j
Ответ:
Volume of emerald = 137.04cm³
Step-by-step explanation:
Given that:
Mass of emerald = 378.24grams
Density of emerald = 2.76grams/cm³
Volume = ?
The equation for this relationship is ρ = m / V in which ρ is density, m is mass (kg or g) and V is volume (cm³ or m³) making the density unit kg/m³ or g/cm³.
Therefore
Density = mass/volume
Volume = Mass/density
i.e
Volume of emerald = Mass of emerald / Density of emerald
Volume of emerald = 378.24grams / 2.76grams/cm³
Volume of emerald = 137.043cm³ ~137.04cm³
Volume of emerald =137.04cm³