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Art [367]
3 years ago
11

amits bank charges a $5.75 fee every month that his account balance is below a certain amount. Amit writes the equation (-5.75)×

7=40.25 to represent how much his account balance changes after 7 months of fees.is Amits reasoning correct?explain

Mathematics
2 answers:
77julia77 [94]3 years ago
7 0
Amits reasoning is not correct.  After 7 months of fees, he would have a negative representation.  If there are 7 groups of -$5.75, than the answer would still be negative in the end.  They are all negative.
Elden [556K]3 years ago
3 0

Answer:

No, Amit's reasoning is not correct.

Step-by-step explanation:

We are given that:

Amit's bank charges a $5.75 fee every month that his account balance is below a certain amount.

we have to determine how much his account balance changes after 7 month of fees

Fees of 1 month=$5.75

Fees of 7 months will be:

      (5.75)×7=40.25

Hence, Amit's reasoning was incorrect as he applied a minus sign with 5.75

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En la división sintética sólo son tomados en cuenta los coeficientes del divisor?
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La división sintetica sirve para el cociente entre polinomios, la cual es particularmente util para cuando tenemos un numerador de grado alto y un denominador de grado 1.

Veremos que si, en la división sintética solo son tomados en cuenta los coeficientes del divisor.

Para explicarla, usaremos un ejemplo.

x^3 - 2x^2 + 5x + 3  será el <u>numerador</u>

x - 2 será el <u>denominador.</u>

Para poder aplicar la división sintetica, el maximo exponente en el <u>denominador </u>debe ser uno.

Así, nuestro cociente es:

\frac{x^3 - 2x^2 + 5x + 3}{x-2}

Procedemos a igualar el <u>denominador</u> a cero:

x - 2 = 0

x = 2

Ahora veremos los coeficientes del <u>numerador</u> (el <u>numerador </u>es el <u>divisor</u>).

Lo que debemos hacer es tomar cada coeficiente (comenzando por los que multiplican a los terminos con mayor exponente) y multiplicarlos por este número.

En este caso, el primer coeficiente es 1.

2*1 = 2

Ahora le sumamos esto al proximo coeficiente, que es -2:

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Multiplicamos esto por el valor de x, que es 2.

2*0 = 0

Ahora sumamos esto al proximo coeficiente, que es 5

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Multiplicamos esto por el valor de x, que es 2:

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Sumamos esto al ultimo coeficiente, que es 3.

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Este ultimo valor es el residuo, y los primeros 3 números que obtuvimos son los coeficientes del cociente, entonces el cociente será:

1*x^2 + 0*x + 10 = x^2 + 10

Como vimos, solo usamos los coeficientes del numerador/divisor para realizar esta operación, por lo que si, solo los coeficientes del divisor son tomados en cuenta.

Si quieres aprender más, puedes leer:

brainly.com/question/10466403

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