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Mademuasel [1]
3 years ago
9

A solution to a system of two linear equations is where they intersect

Mathematics
1 answer:
Mumz [18]3 years ago
3 0

A. Always

Two lines don't always intersect, but the solutions are always where they intersect.

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In the formula l=p+prt, what does l equal when p=500,r=20%, t=2
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Just plug in 500 for p, 0.2 for r (because 20% is equivalent to 0.20), and 2 for t:

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usa el teorema de la altura para proponer como se podria construir un segmento cuya longitud sea media proporcional entre dos se
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Usando el teorema de altura 

El teorema de altura relaciona la altura (h) de un triángulo rectángulo (ver figura) y los catetos de dos triángulos que son semejantes al anterior ABC, al trazar la altura (h) sobre la hipotenusa. De manera que e<span>n todo </span>triángulo rectángulo, la altura (h<span>) relativa a la </span>hipotenusa<span> es la </span>media geométrica<span> de las dos proyecciones de los </span>catetos<span> sobre la </span>hipotenusa<span> (</span>n<span> y </span>m<span>). Es decir, se cumple que:

</span>\frac{n}{h}= \frac{h}{m}

Dado que el problema establece <span>construir un segmento cuya longitud sea media proporcional entre dos segmentos de 4 y 9 cm, entonces, digamos que n = 4cm y m = 9cm tenmos que:

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¿Cómo se podria construir si los segmentos son de a cm y b cm?

Si los segmentos son de a y b cm entonces a y b son parámetros que pueden tomar cualquier valor positivo siempre que se cumpla que:

h= \sqrt{ab}

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In a class of 32 students, 4 have birthdays in October.What percent have October birthdays
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Answer:

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percent = # of October birthdays/total class # = 4/ 32 = 1/8 = 0.125 = 12.5%

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