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Anon25 [30]
2 years ago
14

Which expression results from using the distributive property 5(4x)

Mathematics
2 answers:
mojhsa [17]2 years ago
7 0

Answer:

20*5x

Step-by-step explanation:

multiply outer number by each item in the parenthesis

so 5*4=20 and

5*x=5X

nignag [31]2 years ago
6 0

20x would be ur answer.

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Square of 9 less than a number is 3 less than the number
ale4655 [162]

Answer:Let the number be x, then (x - 9)^2 = x - 3

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x^2 - 19x + 84 = 0

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Step-by-step explanation:

7 0
3 years ago
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Una torre de 28.2 m de altura esta situada a la orilla de un rio, desde lo alto del edificio el ángulo de depresión a la orilla
Svet_ta [14]

Answer:

El ancho del río es 59.9 metros.

Step-by-step explanation:

El ancho del río lo podemos calcular con la siguiente relación trigonométrica asumiendo que la torre forma un triángulo rectángulo con el río:

tan(\theta) = \frac{CO}{CA}

En donde:

CA: es el cateto adyacente = Altura de la torre = 28.2 m

CO: es el cateto opuesto = ancho del río =?

θ: es el ángulo adyacente a CA

Dado que el ángulo de depresión (25.2°) está ubicado fuera de la parte superior de la hipotenusa del triángulo que forma la torre con la orilla opuesta del río, debemos calcular el ángulo interno (θ) como sigue:

\theta = (90 - 25.2)^{\circ} = 64.8 ^{\circ}

Ahora, el ancho del río es:

CO = tan(\alpha)*CA = tan(64.8)*28.2 = 59.9 m

Por lo tanto, el ancho del río es 59.9 metros.

Espero que te sea de utilidad!                  

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2 years ago
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Given: Triangle ABC with AB = 45 and BC = 18.
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Answer:

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Step-by-step explanation:

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