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Zepler [3.9K]
3 years ago
7

In the solution of the equation 5 - 3x = 2x + 9, 3x is added to the equation first. Which of the following should be done next?

Mathematics
2 answers:
brilliants [131]3 years ago
6 0
The answer should be "add -9"
Lorico [155]3 years ago
6 0
Regardless of which action you choose, you should include "to both sides."
For example, you could add -9 to both sides, or you could subtract 9 from both sides (same result).  Adding 3x to both sides results in 

<span>5 - 3x = 2x + 9</span>
   + 3x = 3x
----------------------
5 = 5x + 9

We need to solve for x.  The best way to do this is to subtract 9 from both sides, resulting in -4 = 5x, so that x = -4/5 (final answer).
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Need help asap show your work
Monica [59]

To find the volume we use an equation:

volume = length x width x height

Since this shape is a cube, you only need to know one side to find the volume since all of the sides are equal.

So all you need to find the volume is to multiply 4(1/2) which I am going to simplify to 4.5, is plug it into the equation.

volume = 4.5 x 4.5 x 4.5

Which will get you an answer of 91.125 inches cubed

91.125in^{3}

Hope this helps :)

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3 years ago
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insens350 [35]

Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
Evaluate ab + 3c when a=-6, b=-2, and c=5
ra1l [238]
Do it step by step
ab+3c
(-6)(-2)+3(5)
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8 0
3 years ago
Solve the following equation: lim x-&gt;0 sin3x/5x^3-4x.
goblinko [34]
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sin3x/5x^3-4x=0/0?, sin3x/3x--->1 when x --->0, so sin3x/5x^3-4x=                    [3x. sin3x / 3x] /(5x^3-4x)=(sin3x / 3x) . (3x/5x^3-4x)
   =(sin3x / 3x) . (3/5x^2- 4)
finally lim  sin3x/5x^3-4x=lim (sin3x / 3x) .(3/5x^2- 4)=1x(3/-4)= - 3/4
                 x----->0            x---->0
3 0
3 years ago
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