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erma4kov [3.2K]
4 years ago
9

the ratio of the length and the width of a rectangle is 2:5. If the rectangle has a perimeter of 98 inches, what is the area of

the rectangle?
Mathematics
1 answer:
elixir [45]4 years ago
8 0
The sum of length and width is (98 in)/2 = 49 in.
The length is 2/(2+5) times the sum of length and width, so is 2/7*49 in = 14 in.
The width is 5/7*49 in = 35 in.

The area of the rectangle is (14 in)*(35 in) = 490 in².
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4. Elena va a una fiesta pero no sabe que ponerse, así que lanza un moneda y un dado al
taurus [48]

Answer:

  • <u>1/4</u>

Explanation:

Hola. Puesto que tu pregunta está en español, te responderé en el mismo lenguage.

Estas son las posibilidades dadas por la combinación moneda/dado

                                      Número de combinaciones

Moneda: prenda

    Cara: vestido                 1 de 2:          1/2

     Sello: falda                    1 de 2:          1/2

Dado: color

    Par: negro                      3 de 6:          3/6

    Impar: café                     3 de 6:         3/6

En total son 2 × 6 resultados: 12 (incluye resultados repetidos, no son todos diferentes entre sí)

¿Cuántas combinaciones tienen vestido y color negro?

  • P(Vestido∩negro) = ?

Es decir: moneda = cara y dado = par

  • Son 1 × 3 = 3.

Por tanto, la probabilidad de vestido negro es:

  • 3 de 12 = 3/12 = 1/4 ← respuesta

Hay otras formas de resolverlo. Por ejemplo;

Como los resultados de lanzar la moneda y el dado son independientes:

  • P(Vestido∩negro) = P(Vestido) × P(Negro)
  • P(Vestido) = 1/2
  • P(Negro) = 3/6 = 1/2
  • P(Vestido) × P(Negro) = 1/2 × 1/2 = 1/4 ← mismo resultado
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3 years ago
In order to answer the following question, please use the following image down below:
Kryger [21]

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Step-by-step explanation:

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8 0
3 years ago
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Vikentia [17]

Answer:

(2). <em>b - (a + c)i </em>

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