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SVETLANKA909090 [29]
2 years ago
8

An object has a mass of 18 grams and its volume is 2 cm3 calculate density

Mathematics
2 answers:
Anna [14]2 years ago
6 0
The density is 9 g/cm3
statuscvo [17]2 years ago
5 0

Answer: 9\ gm/cm^3

Step-by-step explanation:

The formula to find the density is given by :-

\text{Density}=\dfrac{\text{Mass}}{\text{Volume}}

Given : Volume of object = 2 cm^3

Mass of object = 18 grams

Then., the density will be :-

\text{Density}=\dfrac{18}{2}=9\ gm/cm^3

Hence, the density of the object would be 9\ gm/cm^3.

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-Dominant- [34]
1) -3(5x+2y=-3)⇒ -15x-6y=9
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2) -9x/-9=27/-9 ⇒ x=-3 

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Reasoning:
Step 1) In order to eliminate, first I had to multiple the first equation by -3 and the second by 2 so that when combining the equations y would cancel each other out so that I could solve for x. <em>Note: There are many combinations as to how you could multiple the equations so that either the x or y would cancel out.
</em>
Step 2) Once y is eliminated, solve for x.

Step 3) Now plug x back into one of the original equations and solve for y. <em>Note: Plug x back into one of the original equations, not the equations that were changed by multiplication,</em> 

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