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Studentka2010 [4]
4 years ago
14

What’s x? 3(x + 6) - x = 18

Mathematics
2 answers:
cestrela7 [59]4 years ago
8 0

Answer:

x = 0

Step-by-step explanation:

Step  1  :

Equation at the end of step  1  :

 (3 • (x + 6) -  x) -  18  = 0

Step  2  :

Equation at the end of step  2  :

 2x  = 0

Step  3  :

Solving a Single Variable Equation :

3.1      Solve  :    2x = 0

Divide both sides of the equation by 2:

                    x = 0

One solution was found :

                  x = 0

Processing ends successfully

plz mark me as brainliest if this helped :)

FrozenT [24]4 years ago
6 0

Answer:

Step-by-step explanation:

3(x + 6) - x = 18

3x + 18 - x = 18

2x = 18 - 18

2x = 0

x = 0 <==

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Help, this is due tonight!
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Answer:

x=18

QR=29

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QS=29

Step-by-step explanation: 2X-7=5x-61=x+11 solve for x since all sides are equal

5 0
3 years ago
In circle Z, what is m∠2? 70° 133° 140° 147°
sattari [20]

Answer:

C

140

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
2(4x – 12) + 10 – 6x = 12
SashulF [63]

Answer:

idk what the improper fraction would be but

8x-24+10-6x=12

2x-14=12

2x=26

x=13

Step-by-step explanation:

5 0
3 years ago
Write an equation In slope intercept form for the line that is parallel to the given line and that passes through the given poin
ludmilkaskok [199]

The equation of the parallel line in slope-intercept form is;

y = \frac{5}{2} x - \frac{25}{2}

Step-by-step explanation:

Let us revise some facts about parallel lines

The equations of two parallel lines have:

  • Same slopes
  • Different y-intercept

The slope-intercept form of the equation of a line is y = m x + b, where m is the slope of the line and b is the y-intercept

The given line has equation 5x - 2y = 10

Put it in the form of y = m x + b to find its slope

∵ 5x - 2y = 10

- Subtract 5x from both sides

∴ -2y = 10 - 5x

- Divide to sides by -2

∴ y = -5 + \frac{5}{2} x

∴ y =  \frac{5}{2} x - 5

- The value of m is the coefficient of x

∴ m = \frac{5}{2}

∴ The slope of the given line is \frac{5}{2}

∵ Parallel lines have same slopes

∴ The slope of the parallel line is m = \frac{5}{2}

- Substitute the value of m in the form of the equation

∴ The equation of the parallel line is y = \frac{5}{2} x + b

To find b substitute x and y in the equation by the coordinates of any point lies on the line

∵ The parallel line passes through point (3 , -5)

- Substitute x and y by the coordinates of the point (3 , -5)

∵ x = 3 and y = -5

∴ -5 = \frac{5}{2} (3) + b

∴ -5 = \frac{15}{2} + b

- Subtract \frac{15}{2} from both sides

∴ b = \frac{-25}{2}

∴ The equation of the parallel line is y = \frac{5}{2} x + \frac{-25}{2}

∴ The equation of the parallel line is y = \frac{5}{2} x - \frac{25}{2}

The equation of the parallel line in slope-intercept form is;

y = \frac{5}{2} x - \frac{25}{2}

Learn more:

You can learn more about the equations of parallel lines in brainly.com/question/8628615

#LearnwithBrainly

5 0
4 years ago
A goat enclosure is in the shape of a right triangle. One leg of the enclosure is built against the side of the barn. The other
Sonbull [250]

Answer:

The lengths are

8 + 8[root]3 , 12 + 8[root]3 and 20 + 8[root]3.

Step-by-step explanation:

Let the side against the barn be xft

We were told that the adjacent side is 4ft more than the side against the barn. This means it has a length of (x + 4)ft.

Lastly, we are told that the hypotenuse is 8ft longer than the side along the barn I.e (x + 4 + 8)ft = ( x + 12)ft.

Since the three lengths form a triangle, the square of the hypotenuse equals the square of the adjacent side plus the square of the opposite side. This is the pythagoras' theorem.

Mathematically, this can be written as follows:

(x + 12)^2 = x^2 + (x + 4)^2

This yields x^2 + 24x + 144 = x^2 + x^2 + 8x + 16

x^2 + 24x + 144 = 2x^2 + 8x + 16

Rearranging this will yield:

x^2 - 16x - 128 = 0

Using the quadratic formula yields the following values for x :

8 - 8[root]3 and 8 + 8[root 3]

Since the first is negative, we discard it and the only correct value of x is 8 + 8[root]3

Now the other length is 12 + 8[root]3 and 20 + 8[root]3.

4 0
4 years ago
Read 2 more answers
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