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k0ka [10]
3 years ago
6

The distance between two towns is 75 km. The distance between the two towns on a map is 1.5 cm. What is the scale on the map?

Mathematics
2 answers:
mars1129 [50]3 years ago
8 0

Step-by-step explanation:

1.5cm => 75km

1cm => 75km * (1/1.5) = 50km

Hence the scale of the map is 1cm : 50km.

lara31 [8.8K]3 years ago
5 0

Answer:

50

..................

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What is the length of segment AB?
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Sea un cuadrado de 2 pulgadas de lado uniendo los puntos medios se obtiene otro cuadrado inscrito en el anterior si repetimos es
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1) La serie geométrica formada es

4, 2, 1,..., ∞

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Step-by-step explanation:

1) El área del primer cuadrado, a₁ = 2² = 4 pulgadas²

El área del siguiente cuadrado, a₂ = (√ (1² + 1²)) ² = (√2) ² = 2 pulg²

El área del siguiente cuadrado, a₃ = ((√ (2) / 2) ² + (√ (2) / 2) ²) = 1 pulg²

Por lo tanto, la razón común, r = a₂ / a₁ = 2/4 = a₃ / a₂ = 1/2

Las áreas de los cuadrados progresivos forman una progresión geométrica como sigue;

4, 4×(1/2), 4 ×(1/2)²,...,4×(1/2)^{\infty}

De donde obtenemos la serie geométrica formada de la siguiente manera;

4, 2, 1,..., ∞

2) La suma de 'n' términos de una progresión geométrica hasta el infinito para -1 <r <1 se da como sigue;

S_{\infty} = \dfrac{a}{1 - r}

Por lo tanto, la suma de las áreas de los cuadrados hasta el infinito se obtiene sustituyendo los valores de 'a' y 'r' en la ecuación anterior de la siguiente manera;

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La suma al infinito de las áreas de los cuadrados, S_{\infty} = 8 in.²

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