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Colt1911 [192]
4 years ago
13

Solve x^2+2x+6=0 using the quadratic formula

Mathematics
1 answer:
levacccp [35]4 years ago
5 0

Answer: x=−1+√​5ı,−1−√​5ı

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Si para jugar al LOTO debes elegir un cartón con 6 números, del 1 al 41, y para jugar al KINO debes elegir un cartón con 14 núme
Dahasolnce [82]

Answer:

En el LOTO tenes 6 números, del 1 al 41. (Cada numero se puede usar una sola vez)

Entonces tenemos 6 selecciones, y 41 opciones para la primera, 40 para la segunda (por que un numero fue usado en la primera), 39 para la tercera, etc.

El numero de combinaciones va a ser igual al producto de los números de opciones en cada caso.

CL = 41*40*39*38*37*36 = 3,237,399,360

Para el caso del KINO lo podemos afrontar de la misma forma.

El primer numero va a tener 25 opciones, el segundo 24, el tercero 23, etc.

Entonces el numero de combinaciones va a ser:

CK = 25*24*23*22*21*20*19*18*17*16*15*14*13*12 = 3.89x10^17

Ahora tomamos el cociente entre las combinaciones para cada caso, lo que va a decir cuantas veces tenemos el numero de combinaciones de LOTO en el numero de combinaciones de KINO (es decir, el numero de cartones de LOTO que necesitamos para tener las mismas combinaciones que un solo cartón de KINO)

Ck/Cl = (3.89x10^17)/3,237,399,360 = 120,031,071.8

8 0
3 years ago
Earth is approximately 4.54 * 10^9 years old. Humans are thought to have evolved around 2.5 * 10^5 years ago.
kondaur [170]

Answer:

5.507*10^-7%

Step-by-step explanation:

(2.5 * 10^5)/(4.54 * 10^9)*1/100 %= 5.507*10^-7%

6 0
3 years ago
What value of n makes the equation n/3 - 2 = 4 true?<br> Show your work.
patriot [66]

Answer:

Step-by-step explanation:

n/3 - 2 = 4             Add 2 to both sides

n/3 - 2 + 2 = 4+2    Combine

n/3 = 6                  Multiply both sides by 3

3*n/3 = 6 * 3

n = 18

7 0
3 years ago
What is 1/64 to the second power as a negative exponent? help please!
masya89 [10]
8^2 = 64 since 8*8 = 64
Squaring a number is the same as multiplying it by itself. 

Since 8^2 = 64, this means
1/64 = 1/(8^2) = 8^(-2)

So, 1/64 = 8^(-2)
where the exponent is negative 2
7 0
4 years ago
The clock models the length from the center of a clock to the tip of the minute hand as being 28 inches.
Fynjy0 [20]

Answer:

52

Step-by-step explanation:

5 0
3 years ago
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