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nexus9112 [7]
3 years ago
6

credit cards place a three-digit security code on the back of cards.what is the probability that a code starts with the number 7

Mathematics
1 answer:
Andrew [12]3 years ago
5 0
So the numbers on the credit card can start with any single-digit number

So it could start with;
0
1
2
3
4
5
6
7
8
Or 9

We are looking for the odds of it starting with a 7

There is only one 7, so the numerator is 1
There are then nine other possible numbers it could be, and counting the number 7, there is a total of ten different possibilities, so 10 is the denominator

So the odds of the card starting with a 7 is
1/10
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Half the chance of landing tail once(1/2)

Half the chance of land tails four times (1/2 of 1/2 of 1/2 of 1/2)

1/16

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Step by step explanation:

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So the commission William will make is =

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Hence, William will make a commission of $45.84 on the computer he will sell for $764.

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Step-by-step explanation:

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Un cable guía de 600 pies esta sujeto a la parte superior de una torre de comunicaciones. Si el cable forma un ángulo de 65° con
natita [175]

Answer:

La torre tiene 543.78 pies de altura.

Step-by-step explanation:

Podemos pensar en esta situación como si fuera un triángulo rectángulo, donde el cable es la hipotenusa y la torre es uno de los catetos. (Abajo se puede ver un dibujo de esta situación).

Nosotros queremos encontrar el valor de H, que es el cateto opuesto al ángulo conocido de 65°.

Entonces simplemente podemos usar la relación:

Sin(θ) = (cateto opuesto)/(hipotenusa)

donde:

cateto opuesto = H

θ = 65°

hipotenusa = 600 ft

sin(65°)  = H/600ft

sin(65°)*600ft = H = 543.78 ft

La torre tiene 543.78 pies de altura.

8 0
2 years ago
The answers are<br> 9<br> 12<br> 18<br> 36<br> 72
irinina [24]

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36

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