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3 years ago

13

A safe has a 4-digit lock code that does not include zero as a digit and no digit is repeated. What is the probability of a lock

without all even digits?
There are/is ___ way(s) to get a lock code with all even digits.

There are 3,024 different 4-digit lock codes.

There are are/is ___ way(s) to get a lock code without all even digits.

The probability of a 4-digit lock code without all even digits is ___/ 3024.

2 answers:

Margarita [4]3 years ago

8 0

Answer:

A. 9

B. 3,024

C. 4

D. 24

hope this helps!

kobusy [5.1K]3 years ago

8 0

Answer:

24, 3000, 3000/3024

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A city currently has 60 family-owned restaurants. In the future, it is estimated that the number of those restaurants will decli

zheka24 [161]

The correct answer is D. 6

Explanation:

To know precisely how the number of restaurants in the city decreases over time, it is necessary to determine the 18% of the total of restaurants each year and to subtract this number. The process year per year is shown below:

First-year- 60 restaurants- Find the percentage by writing the known value and using cross multiplication

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$x 100 = 60 x 18$

$x = \frac{1080}{100}$

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Second-year - 49.2 restaurants- Repeat te process

$x = \frac{49.2x 18}{100}$ Shortened version of the equation. Total of restaurants, multiplied by percentage and divided into 100 (total percentage)

$x = 8.8$

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Third-year- 40.4 restaurants

$x = \frac{40.4 x 18}{100}$

$x = 7.2$

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Fourth-year- 33.2 restaurants

$x = \frac{33.2x 18}{100}$

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Fifth-year- 26.9 restaurants

$x = \frac{26.9 x 18}{100}$

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Sixth-year- 22.1 restaurants

$x = \frac{22.1x 18}{100}$

$x= 3.96$

$22.1-3.9 = 18.1$

According to this at this rate, it will take at least 6 years for the number of restaurants to be below 20.

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4 years ago