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vodka [1.7K]
3 years ago
8

What is the reason for each step in the solution of the equation? 18−2x=4x

Mathematics
2 answers:
Gekata [30.6K]3 years ago
6 0
You want to get all the x's on one side of the equation so add 2x to both sides of the equation. 4x + 2x = 6x. now you want to get the x by itself so dived both sides of the equation by 6. 18 = 6x, 18/6 = x, x = 3 
Reika [66]3 years ago
3 0
In order to solve an equation for a certain variable, you should isolate that variable on one side of the equation and leave all the other terms on the other side on the equation.
The, you solve to get the value of the variable.

The equation we have here is:
<span>18−2x=4x
First, we need to isolate the terms containing the "x" on one side of the equation. To do this, we will add 2x to both sides of the equation:
</span><span>18−2x+2x=4x+2x
18 = 6x
Now, we need to get the value of the "x". To do this, we will simply divide both sides of the equation by 6:
18/6 = 6x/6
3 = x .............> This is the solution of the equation</span>
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Step-by-step explanation:

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But just in case the formulae for finding volume is to multiply is elements. So to find volume multiply is width, length and height.

6 0
1 year ago
Two angels are supplementary. The measure of the large angle is four more than three times the measure of the small angle. Find
sashaice [31]

Answer:

The measure of the two supplementary angles is

Small angle = x = 44°

Large angle = y = 136

Step-by-step explanation:

Supplementary angles are two angles whose measures add up to 180° .

Let

Small angle = x

Large angle = y

x + y = 180°.... Equation 1

The measure of the large angle is four more than three times the measure of the small angle

Hence: y = 4 + 3x

We substitute 4 + 3x for y in Equation 1

x + 4 + 3x = 180°

4x + 4 = 180°

4x = 180° - 4

4x = 176

x = 176/4

x = 44°

Solve for y

y = 4 + 3x

y = 4 + 3(44)

y = 4 + 132

y = 136°

Therefore, the measure of the two supplementary angles is

Small angle = x = 44°

Large angle = y = 136

5 0
3 years ago
Jackie has a square wall that she covered using 130.5 square feet of fabric without any overlap . Whic measurement is closest to
dem82 [27]

Answer:

32.625

Step-by-step explanation:

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5 0
3 years ago
Which equation would be the best to solve by completing the square?
Anvisha [2.4K]
I can do quadratic dude
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Given the area of a square is 225 ft.² what is the length of each side
Vinvika [58]

Answer:

15ft

Step-by-step explanation:

the square root of 225 is 15, so the answer is 15ft

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8 0
3 years ago
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