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Jet001 [13]
2 years ago
9

1) Lynda runs the 400 meter for her school's track team. She beat her best time by 3.6

Mathematics
1 answer:
Dmitriy789 [7]2 years ago
5 0

Answer:

52.9

Step-by-step explanation:

49.3+3.6=52.9 seconds

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Al sumar y/o restar números decimales, siempre se debe aplicar la norma de los signos. * 1 punto FALSO VERDADERO
Luden [163]

Answer:

La norma de los signos es para el producto de números reales, y la norma es la siguiente.

(+)*(+) = (+)

(+)*(-) = (-)

(-)*(+) = (-)

(-)*(-) = (+)

Es decir, el producto de dos números de mismo signo es siempre positivo

El producto de dos números de distinto signo es siempre negativo.

Particularmente, para la suma esta norma no funciona (pues no está definida para la suma)

Pero en casos como:

5 - (-4)  

(esto sería: "la diferencia entre cinco y menos cuatro")

notar que podemos reescribir esto como:

5 + (-1)*(-4)

Ahora podemos aplicar la norma de los signos:

5 + 4 = 9

Donde aplicamos la norma de los signos,  

Podemos concluir que, si bien es una regla que aplica al producto, siempre la tenemos que tener en cuenta en cualquier operación que hagamos.

Por lo podemos concluir que la respuesta correcta es verdadero.

7 0
2 years ago
PLEASE ANSWER ASAP! 20 POINTS IF U ANSWER!
PSYCHO15rus [73]

Answer:  multiply by 3

Step-by-step explanation:

I know this because the relation ship applies to all of the number, for example 3 x 3 = 9 and so on.

8 0
2 years ago
Read 2 more answers
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