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Dmitrij [34]
3 years ago
8

The length of a rectangle is 6 inches longer than its width. The perimeter of the rectangle is 28 inches. If x represents the wi

dth of the rectangle, which equation can be used to find its value? x + 6 + 2x = 28 6x + 6x + x + x = 26 2(x + 6) = 28 2(x + 6) + 2x = 28
Mathematics
1 answer:
RUDIKE [14]3 years ago
3 0

Answer:

D:2(x+6)+2x=28

Step-by-step explanation:

The width is x. The length is x+6. The formula for the perimeter of a rectangle is 2l+2w. Input our knowns.

2(x+6)+2x=28

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Step-by-step explanation: 1/5

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What is 7 (1/2) in 9 minutes as a unit rate
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6 0
4 years ago
Calcule la ecuación general de la recta que pasa por la intersección de la recta:
adell [148]

La ecuación general de la recta es x + 3 · y = - 15.

<h3>¿Cómo determinar la ecuación de una recta?</h3>

Según la geometría, una recta es generada por la existencia de dos puntos distintos y en este problema debemos hallar una ecuación de la recta que pasa por la intersección de las dos rectas y otro punto. Primero, determinamos la solución del sistema de ecuaciones lineales para conocer la localización del primer punto:

7 · x - 15 · y = 39                 (1)

5 · x + y = - 19                     (2)

The solución del sistema de ecuaciones lineales is (x, y) = (- 3, - 4).

Segundo, determinamos la pendiente de la recta mediante la fórmula de la recta secante:

m = [- 6 - (- 4)] / [3 - (- 3)]

m = - 1 / 3

Tercero, determinamos el intercepto a partir de la ecuación de la recta:

b = y - m · x

b = - 6 - (- 1 / 3) · 3

b = - 6 + 1

b = - 5

Finalmente, determinamos la ecuación de la recta en su forma general:

y = (- 1 / 3) · x - 5

(1 / 3) · x + y = - 5

x + 3 · y = - 15

La ecuación general de la recta es x + 3 · y = - 15.

Para aprender más sobre la ecuación general de la recta: brainly.com/question/19588565

#SPJ1

7 0
2 years ago
Solve for x <br> 5(x-10)=30-15x
timofeeve [1]

Answer:

solution :

    x = 4

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    5*(x-10)-(30-15*x)=0

Step by step solution :

Step  1  :

Equation at the end of step  1  :

 5 • (x - 10) -  (30 - 15x)  = 0

Step  2  :

Step  3  :

Pulling out like terms :

3.1     Pull out like factors :

  20x - 80  =   20 • (x - 4)

Equation at the end of step  3  :

 20 • (x - 4)  = 0

Step  4  :

Equations which are never true :

4.1      Solve :    20   =  0

Step-by-step explanation:

4 0
3 years ago
The town of lantana needs 14,000 for a new playground. Lantana elementary school raised 5,258, Lantana middle school raised 2834
Pavlova-9 [17]

Answer:

about 12000 but real answer is 12224

Step-by-step explanation:

6 0
2 years ago
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