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kompoz [17]
3 years ago
7

Mary's school is selling tickets to a play. On the first day of ticket sales the school sold 6 senior citizen tickets and 9 stud

ent tickets for a total of $72. The school took in $92 on the second day by selling 12 senior citizen tickets and 5 student tickets
Mathematics
1 answer:
valina [46]3 years ago
3 0

Answer:1000

Step-by-step explanation:

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4x-5y=10

Step-by-step explanation:

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What type of angle is this? <br> A. Straight angle<br> B. Supplementary <br> C. Complementary
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Una heladeria dispone de 20 frutas distintas para elaborar sus malteadas. Si los clientes pueden elegir tres sabores para mezcla
Dahasolnce [82]

Answer:

Existen 6840 permitaciones de malteadas de tres sabores distintos que la heladería puede ofrecer.

Step-by-step explanation:

En este caso, el cliente que adquiere una malteada de tres sabores distintos sigue el siguiente procedimiento:

1) El primer sabor sale de cualquiera de las 20 frutas disponibles.

2) El segundo sabor es distinto al primer sabor, es decir, que sale de las 19 frutas restantes.

3) El tercer sabor es distinto al primer sabor y al segundo sabor, es decir, que sale de las 18 frutas restantes.

Puesto que existe una doble conjunción y que puede importar el orden según la preferencia del cliente, se habla matemáticamente de una permutación, definida como:

n\mathbb{P}k = \frac{n!}{(n-k)!} (1)

Donde:

n - Número de sabores disponibles, adimensional.

k - Número de sabores escogidos, adimensional.

Si tenemos que n = 20 y k = 3, entonces la cantidad de malteadas de tres sabores distintos es:

n\mathbb{P}k = \frac{20!}{(20-3)!}

n\mathbb{P}k = \frac{20!}{17!}

n\mathbb{P}k = 20\cdot 19\cdot 18

n\mathbb{P}k = 6840

Existen 6840 permitaciones de malteadas de tres sabores distintos que la heladería puede ofrecer.

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3 years ago
A city park commission received a donation of playground equipment from a parents' organization. The area of the
GenaCL600 [577]
I think it’s 5 square yards I’m not sure though
4 0
2 years ago
Please help me right away.
velikii [3]
I’m pretty sure it’s c , sorry if it’s wrong tho
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2 years ago
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