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-Dominant- [34]
3 years ago
8

PLZ HURRY IT'S URGENT!!!!!!!!

Mathematics
2 answers:
Misha Larkins [42]3 years ago
5 0

Answer:B

Step-by-step explanation:

6 + 2s + -8s = 18

Combine like terms: 2s + -8s = -6s

6 + -6s = 18

Solving

6 + -6s = 18

Solving for variable 's'.

Move all terms containing s to the left, all other terms to the right.

Add '-6' to each side of the equation.

6 + -6 + -6s = 18 + -6

Combine like terms: 6 + -6 = 0

0 + -6s = 18 + -6

-6s = 18 + -6

Combine like terms: 18 + -6 = 12

-6s = 12

Divide each side by '-6'.

s = -2

Simplify

s = -2

olga2289 [7]3 years ago
3 0

Let's solve your equation step-by-step.

6+2s−8s=18

Step 1: Simplify both sides of the equation.

6+2s−8s=18

6+2s+−8s=18

(2s+−8s)+(6)=18(Combine Like Terms)

−6s+6=18

−6s+6=18

Step 2: Subtract 6 from both sides.

−6s+6−6=18−6

−6s=12

Step 3: Divide both sides by -6.

−6s/−6

=12/−6

s=−2

Answer:

s=−2

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The perimeter of the triangle is 42. Find the length of all the sides.
iragen [17]
<h3>Given :-</h3>

  • Perimeter of triangle = 42

  • Side 1 of triangle = (x + 4)

  • Side 2 of triangle = (3x + 8)

  • Side 3 of triangle = (5x + 6)

<h3>To find:-</h3>

  • Length of sides

<h3>Explanation:</h3>

So to find length of sides we have to find the value of x.We can find value of x , by this formula:

\\  \\

\bigstar \boxed{ \rm perimeter \: of \triangle \:  = side_1 + side_2 + side_3}

\\  \\

So:-

\\

\dashrightarrow \tt perimeter \: of \triangle \:  = side_1 + side_2 + side_3 \\

\\  \\

\dashrightarrow \tt 42  = (x + 4) + (3x + 8)+( 5x + 6) \\

\\  \\

\dashrightarrow \tt 42  = x + 4+ 3x + 8+5x + 6 \\

\\  \\

\dashrightarrow \tt 42  = x + 3x+5x+ 4 + 8 + 6 \\

\\  \\

\dashrightarrow \tt 42  = 9x+ 4 + 8 + 6 \\

\\  \\

\dashrightarrow \tt 42  = 9x+ 18\\

\\  \\

\dashrightarrow \tt 42  - 18 = 9x \\

\\  \\

\dashrightarrow \tt 24 = 9x \\

\\  \\

\dashrightarrow \tt  9x = 24 \\

\\  \\

\dashrightarrow \tt  x = \dfrac{24}{9}  \\

\\  \\

\dashrightarrow \bf  x =2.67 \{approx \}\\

\\  \\

  • Side 1 of triangle = (x + 4)
  • Side 1 of triangle =2.67 + 4
  • Side 1 of triangle = 6.67

  • Side 2 of triangle = 3x + 8
  • Side 2 of triangle = 3 × 6.67 + 8
  • Side 2 of triangle = 20.01 + 8
  • Side 2 of triangle = 28.01

  • Side 3 of triangle = 5x + 6
  • Side 3 of triangle = 5 × 2.67 + 6
  • Side 3 of triangle = 13.35 + 6
  • Side 3 of triangle = 19.35

━━━━━━━━━━━━━━━━

~WindyMint

3 0
2 years ago
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